Firstly I will say I agree with all of Finch's proposed changes (except for Weavile, I think it is a really good mon in the meta that can potentially clean up teams really easily and is deserving of its A rank).
I'll also go over the mons
Drifting mentioned.
Milotic (D) - 2 Uses (0% Winrate)
Some people have stated why this should still be ranked, but imo, its not enough of a niche. Beating primarina and having some role compression is nice, but not nearly enough to get it ranked. It's just another generic bulky water type, which while not bad, doesn't really set it apart. If manaphy picks up in viability, sure, but for now, UR.
Pincurchin (D) - 2 Uses (50% Winrate)
I mean, yeah it has something really unique, but idk man, it feels really bad. As a suicide lead for iron valiant to sweep, you kinda are being beat by every other suicide lead. I could see this being ranked, but if there was a D- tier, this would be going straight there.
Ninetales (UR )- 2 Uses (100% Winrate)
Yeah, this def should be ranked. As somebody who has used this, it has useful qualities over torkoal in encore and healing wish, along with faster speed allowing it to get the jump on stuff like kyurem, which isn't really too much but can be useful. Torkoal does have it beat due to packing rapid spin, stealth rocks and being better at countering physical mons, but this should be in C rank.
Hippowdon (D) - 3 Uses (0% Winrate)
I can see why this is ranked, but imo, it shouldn't really be. While sand is decent (this mon is not good enough standalone), ttar is SO much better, and you are actively making yourself worse by using hippowdon. Sure, having recovery is nice, but ttar's massive utility movepool and power beat it by a counter mile. The main reason it was ranked in the first place was it did well into archaludon, which is long gone. UR it should go. Also didn't help one of the replays it came out it literally died immediately lmao.
Okidogi (UR) - 3 Uses (67% Winrate)
Yeah, this should be ranked on the VR. Okidogi has risen as the single best zama counter ever conceived as unless the opposing player severly misplays, they will beat zama 100% of the time. It also is a dangerous setup mon in its own right, able to take on many common structures. C+ I think it should go, as that is a good starting point though it being higher is not something I would be oppposed to.
Deoxys-Defense (UR) - 3 uses (67% Winrate)
I geniunelly didn't know this was used, so I had to watch the WCOP replays again. And uhh, it didn't really do much in the replay I saw (I am NOT going through every single replay for pete's sake, only some of the most recent round, cause my attention span is not long enough to go through every replay). It didn't do much in that match and it felt like any other bulky mon would better fill that role. I'm not necessarily opposed to ranking it, and if somebody can show me a replay that shows otherwise, I will happily be wrong. For now though, UR.
Zarude (D)
I remember when I first nominated this for UR, a few people said how it could "beat stall teams", but not only were the teams it was on limited (spike stacking sun teams), but they also had to be against very specific stall teams. Hell, stall experts literally said that it was not good. If we rank zarude, we rank toxicroak too, cause that at least can beat a larger array on stall teams, and nobody is going to be ranking toxicroak. Slam dunking it to UR.
Wo-Chien (D)
I still think this should be ranked. Great on stall teams and can be decent on other non stall teams (though unspectacular). Is probably the best waterpon counter (besides u-turn, which is kinda unpopular? Idk on how popular u-turn is) in the tier, as it doesn't fear +2 play rough to OHKO at all and knock variants are not threatening it like sinistcha can sometimes fall prey to. It can also spread a lot of chip damage, but is quite passive and has a really bad defensive typing. Keep D rank.
Thundurus-Therian (D)
On one hand, this is a devestating mon to face and can really clean up unprepared teams (which most are). On the other hand, it kinda is outclassed by a lot of things (primarily zapdos and raging bolt as electric types) and can feel underwhelming with its speed and fraility. I think this is a D rank mon, as it can work well, but has major limiting factors.
Talonflame (D)
Talonflame is a mon that has really picked up in viability recently, as it has some really amazing traits. It's of course, a defogger that can beat ghold, which is pretty big in this meta, and a flame body user, which while it does have competition in this role in moltres, they have enough distinguishing factors in order to differeniate each other. Talonflames high speed (outspeeding darkrai and such at max speed) is really good in order to revenge kill threats with bb (an option which I think is really good on it as flame body procs are usually enough to get it by in that department) such as chipped darkrai, waterpon and serperior. Just a good mon on some teams, so I think a rise to C is fair.
Muk (D)
I'll keep this short, muk is almost exclusive to stall teams (I saw someone use it in 1600s to decent success on a Balance team) and its decent there. It acts as a knock absorber that can deal with mixed valiant, an otherwise annoying matchup for stall, while spreading its own knocks and poisons. A stall expert can explain this more, but D rank is where muk should be.
Lokix (D)
The newest addition to the VR, Lokix is a mon that I think is pretty good in D rank. It has some nice qualities, with tinted lens first impression hurting most things that don't quad resist it and every other move it uses also having this property is nice. It can revenge kill a lot of threats with dual priority (the way to go I believe) as many fast mons simply cannot take its hits. It can struggle with really bulky mons that don't care for its admittidly weak hits, but it can go ballistic against some teams. D rank is fair.
Kommo-o (D)
Kommo-o is a mon I have experimented with a bit and I can say its weird. On paper, it can deal with both ghold and gambit in one slot with id+bp and flamethrower while being a very varied mon for offensive teams. In practice, uhhhhh, it doesn't perform so well. Those stats, while good, are not really spectacular in any specific area and make it come up short in some areas. I feel with experimentation it can be good, but for now, its D rank, I'm sorry :(
Hydreigon (D)
Hydreigon is a mon that does have really good traits. That special attack stat, while not as impressive now, is still REALLY good. It also has a wide movepool and levitate, which is great for avoiding the hazard game. It does have decent 4mss, as it kinda needs np, stabs, sub, flash cannon, earth power and maybe u-turn or some other coverage to REALLY be destructive. However, its base traits are still good enough, so I think D rank is fair (I'm sorry
Mimikyu Stardust)
Breloom (D)
Breloom has had a real downfall this gen after the sleep nerf, which was one of its standout tools. It's powerful, but this gen has shown that power isn't everything. So what does breloom have? Well, the main thing is mach punch and LOTS of power. However, I don't think this is enough for it to be ranked. This gen's power is so extremely high and other wallbreakers have lots of power while having better bulk, as even waterpon ivy cudgel at neutral is doing 50%. A mon with extreme power that has priority are abundant in the tier, and I don't think breloom overcomes it with its other traits. UR for sure.
Arcanine-Hisui (D)
Arcanine Hisui is a mon that does have devestating damage output. Fire+Rock is unresisted by anything in OU (in fact, not much resists that in general) and with a powerful e-speed, it can clean up games quite well. Rock head and recoiless flare blitz/head smash make it almost impossible to switch. I say almost, as defensive tusk stonewalls it quite well, and is able to fire back with a powerful e-quake. Just as difficult it is to switch into harcanine, its difficult to switch harcanine in, as fire/rock is HORRIBLE defensively, as 4x weaknesses to water and ground are not good in this meta, and while a 4x fire resistance and fairy/ice resistance is nice, they are not enough to overcome its weaknesses. However, harcanine can work well on specific teams and thus should stay D rank.
Reuniclus (C)
Funnily enough, this post coincides with the Reun Suspect Test in BW but oh how the mighty have fallen. Reun has a lot of good traits. Magic Guard or Regen for fantastic abilities to choose from while it has quite the diverse movepool with cool options and pretty great bulk. However, its a psychic type. Do I need to explain more? Yeah, psychic this gen is a typing which really hurts any mon that doesn't have extraordinary traits and reuniclus sadly doesn't have enough of that. However, magic guard is something quite unique and it can work well on some teams, so C rank is fair I think.
Polteageist (C)
Polteageist is the highest ranked shell smash user in the game (torkoal does NOT count, if you use shell smash torkoal you are a freak) and for good reason. It has a 134 base special attack and passable enough speed at base 70. Furthermore, it has weak armour to outspeed anything else that may hit it on the physical side by giving it a speed boost. It can then fire off powerful stored powers and tera blast fightings. However, its still ranked RUBL for a reason, it really needs that smash boost and tera to truly sweep and even at +2 its outsped by speed booster valiant, so most fast scarfers too will be able to revenge kill it. It's also kinda specific, as its best on psychic terrain teams which negate its priority weakness quite well. However, it can be very dangerous after a boost and sweep a team that is even slightly weakened, so C rank is fair.
Necrozma (C)
Necrozma is quite the enigma, as on first glance it looks underwhelming. It has the psychic typing, which as said on reuniclus, is a bad typing. But it has some respectable traits. Prism armour is frankly, a busted ability, reducing super effective damage to do 3/4 their normal damage, and with its great bulk, it can take many hits. Furthermore, its movepool is quite wide and with good attacking stats on either side it can be quite expressive. However, that psychic typing holds it back too much and its speed is too slow in this meta, so I think it should go to D rank (though I am rn testing it out, so maybe it will change).
Moltres-Galar (C)
From three dark weaknesses to a dark type, moltres galar is not very unique in what it does. It's another setup sweeper that aims to end a game as quickly as possible. With a dual dance set with either stabs or fiery wrath+tera blast fairy, moltres galar can be quite a threatening sweeper. It can also use two items for this, with a sitrus berry set being more reliable by trying to get multiple procs of berserk, or a faster paced but unreliable weakness policy set that tries to take advantage of goltres' great 90/90/125 bulk. So, what's the issue? Well, it is just a really standard setup sweeper that doesn't set itself too far from the crowd, and its forced into this dual dance role as any defensive role it might want is cut in the butt by it not learning roost (which is shocking really). I would say C rank is fair, as it is threatening, but not really noteworthy.
Indeedee (C)
Indeedee is of course, used to set up psychic terrain in order to let expanding force users, shell smash users and other frail but fast threats thrive. It also has quite the damage output and utility movepool with healing wish and encore. However, it oftentimes struggles against rilla replacing its terrain and the fact that it can sometimes be destroyed by common mons. It leads a legitimate playstyle and thus C rank is fair for it.
Grimmsnarl (C)
As stated above by
Finchinator, grimmsnarl has quite a good defensive typing and overall profile in order to support other mons in order to really abuse the tools they have. However, it does have competition in the suicide lead role, especially from ninetales who sets up both screens at once. I agree with Finch that it should rise to C+, as it has shown itself to be quite a good lead.
Comfey (C)
Comfey caused quite the hype early on in this meta, but its died down quite a bit. It's bread and butter is being used on g-terrain teams as a sweeper with calm mind and grassy seed making it quite bulky while using draining kiss to keep itself healthy by using its triage ability to move first with draining moves. It can also use tera blast fire or ground in order to hit opposing steel types in its way to truely destroy an opposing team. However, comfey can only really fit on these teams (and a few other offensive teams) and is forced to tera in order to try to sweep, which can be stopped early on by doing enough damage with a mon that is bulky, such as gholdengo. It can be a threat, but does struggle in notabel areas, so C rank is fair.
Azumarill (C)
I was one of the ones who nominated Azumarill to C rank, and I have to say Azumarill has quite a lot of good traits. With huge power, it can hit quite hard with boosted liquidations or play rough's, while having aqua jet to pick off weakened foes. It also has some good defenses, allowing it to take hits quite well. It's coverage is also good, with ice spinner and knock off hitting targets for big damage that may wall it. However, azumarill does have its downsides. Besides from aqua jet, its quite slow, and its bulk isn't the absolute best thing in the world. It also faces stiff competition from primarina in the water/fairy role. However, both cb and AV sets (Belly drum is niche and is not too good) can put in a lot of work and I ultimately think that azumarill should rise to C+ rank.
Mandibuzz (C+)
Mandibuzz is a weird mon due to beating things it shouldn't beat and losing to things it shouldn't lose to. Mandibuzz has quite the good defensive profile, with 110/105/95 being amazing defensively. It also has a lot of utility moves, with knock, toxic, defog, id, foul play and u-turn to fill its kit. It can stonewall lots of mons pretty well and can fit nicely into stall teams. However, mandibuzz has flaws that are noticeable. Despite being a dark type, it does not beat gholdengo, which is big since it's primary niche is defogging. Knock does decent damage the first time, but ghold recovers off the damage and then precedes to set up. It also has nasty 4mss, as every utility move listed before and roost are wanted in its kit, and not having one of them is crippling in common scenarios. However, mandibuzz can do well if supported, so I think C+ is fair.
Blaziken (B)
Blaziken has had quite the fanfare this gen, with alongside serperior, it was theorised to be 'broken' with tera. And as the DLC2 dropped, Blaziken came and, let's just say it was the opposite of broken. Now, blaziken does have good traits. Fire+fighting is quite good offensively, and blaziken does have good coverage in knock off, bb, rock slide, thunder punch and poison jab to deal with resists. It's most known for speed boost shenanigans, as it can boost up its offenses and speed at the same time with sd or just by protecting for a turn to get the speed boost for free. However, blaziken has lots of shortcomings. It is extremely frail, due to its poor defenses and the recoil/dropped defenses from its stab moves meaning it can sometimes kill itself/get picked off by priority before it can truely sweep. It also typically needs two speed boosts in order to outspeed everything, aa the speed level in SV has gone up immensly. However, blaziken can work in scenarios, but it doesn't seem like a B rank mon to me, comparing it with other B rank mons. It feels more like iron boulder, in that both can be devestating sweepers if everything goes right, but oftentimes not everything does and they can be stopped before they truely get started. So B- rank alongside Iron Boulder.
So, just to recap.

-> D/UR

-> D/UR, though this is a difficult choice

-> UR/C

-> D/UR

-> UR/C+

-> Keep UR (subject to change)

-> D/UR

-> Keep D

-> Keep D

-> D/C

-> Keep D

-> Keep D

-> D/UR

-> Keep D

-> D/UR

-> Keep D

-> Keep C

-> Keep C

-> C/D

-> Keep C

-> Keep C

-> C/C+

-> Keep C

-> C/C+

-> Keep C+ tier

-> B/B-