It's been too long since we had any actual disagreement or discussion on nominations aside from the one time it came up for Emboar of all things. Not only do I miss that as a valuable part of figuring out where these things should end at, but if I'm going to vote against nominations it can't hurt to tell people why.
A- -> B
Let's Address the Cat in the Room

Alolan Persian is easily one of the most overrated and out of place Pokémon on the PU viability
View attachment 762428 rankings. On a game to game basis, it struggles to make meaningful progress against most common cores, especially ones that aren’t already weak to stronger, higher-ranked threats. As a defensive pivot, Persian often finds itself forced to switch out after taking a hit, especially if the opposing mon has reliable recovery or enough bulk to stick around long game. This leaves it vulnerable to repeated pressure with little payoff other then stricktly pivoting. Knock Off and Parting Shot are practically auto-includes You’re left with two move slots that often feel like filler. Persian rarely sticks around long enough to justify more utility. You might hear arguments that the tier is favorable to Knock Off and Dark-types. While that’s true in general, Persian fails to capitalize. Its extremely low offensive stats mean it struggles to actually remove key threats like guno uxie and slowbro, even when hitting them for double damage. This often forces it to run Foul Play, which is more of a band-aid than a solution thunder wave serves to be more of a nuisance then threatening as most Pokémon who would be crippled naturally switch out of Persian or aren't too crippled by it. Persian is also just generally less bulky then he seems many people seem to think fur coat has multiplied some crazy high defense stats like the defensive coming of mega mawile but persian (one again) low stats come back to bite it (calcs at bottom) its outclassed Unneeded a poor utility mon and clearly SOMEONES favorite Pokémon.
252 Atk Ambipom Double-Edge vs. 0 HP / 252 Def Fur Coat Persian-Alola: 88-105 (32.4 - 38.7%) -- 98.7% chance to 3HKO
-1 252 Atk Ambipom Double-Edge vs. 0 HP / 0 Def Arcanine: 114-135 (35.5 - 42%) -- guaranteed 3HKO
252 Atk Ambipom Double-Edge vs. 252 HP / 0 Def Uxie: 130-154 (36.7 - 43.5%) -- 99.1% chance to 3HKO after Leftovers recovery
252 Atk Ambipom Double-Edge vs. 0 HP / 0 Def Eviolite Tera Poison Rhydon: 93-111 (26.4 - 31.6%) -- guaranteed 4HKO
This post just makes me think you don't understand how Persian is meant to work. Its primary function is as a pivot which enhances the rest of your team, not as a consistent defensive backbone. Crucially, it has those nice defensive calcs while also providing a very fast Foul Play / Parting Shot, while other supporting moves like Thunder Wave, Knock Off, and Switcheroo are all secondary functions that it can threaten if it wants to. Complaining that Persian isn't removing a key threat like Glowbro is like complaining that Pawmot isn't tanking hits for you. It's super good at being fast and annoying, it's incredibly easy to build with, and I still wouldn't be 100% against a drop to B+ but that's mostly because I think pivot Grimmsnarl is getting better again and in some competition for the slot.
B+ -> B-/C
Pretty far from good at the moment (imo) terrain is still common enough for this guy to be near deadweight. It is sometimes impressive as a secondary scarfer but that’s all the praise I can really give.
B -> C
This one maybe feels the most out of place here currently once again there is only one steel to trap and imo lacks outputting damage some of the better builders can make it work but otherwise it usually looks terrible.
On Golurk- I really don't think terrain is good enough to be a reason to drop him, nor is he that bad into it with most sets, although admittedly only running EQ+Poltergeist could leave you kinda screwed. Rocker that's good at trades and forcing specific lines is nice, even if Thwackey is annoying you should have utility into something.
On Magneton- what do you mean lacks output? The main thing it has going for it (imo) is how devastatingly strong it is. I don't care about trapping, I care that Analytic Choice Specs calcs go stupid. That being said, I find myself more interested recently in things that need a little less prediction, even something as simple as Milotic+Mudsdale means you have to pick your move wisely. B- seems fine, putting it in C next to something like Coalossal (which you rightfully called out in the same post) feels like a huge overreaction.
C > C+
terrain moth is fine but holy shit the specs set is a menace, specs tinted lens bug buzz dunks nearly the entire tier in two hits, and you can increase your damage output even further with tera. tinted lens also means that your stabs are really all you need (although one may opt to run giga drain for rhydon), opening you up to utility options like morning sun and u-turn. it has problems, the rocks weakness sucks and will limit your chances to come in and your speed tier isn't fabulously impressive so revenging isn't too arduous of a task, but good god this shit eats balance alive
NEW > A+
wowie the mon that's been uu for several generations is good who woulda thought?? very colorful and unique toolkit that keeps it from being overshadowed by other poisons and grasses and compacts so much defensive utility into one slot. checks pawmot, keeps milotic and rhydon on their toes, and is easy to keep healthy over the course of a game so long as it doesn't have to sponge any particularly large hits. practically a balance staple already.
On Venomoth- agree with the sentiment but this is B- material and maybe even B rank, placing it next to Hisuian Braviary and Magneton feels kind of right in that they all have similar roles with different pros and cons and I feel about equally on all of them.
On Amoongus- am I the only one who thinks this is pretty whatever? It just sorta does too little as a defensive mon where everything else has some level of pivoting or outputting useful damage or utility that outclasses it. You want to use it for role compression into as many big threats as possible, but they all beat it conditionally to the point where it can't cover any of them well enough. I want it in like, A- next to Venusaur, but given how high other people are on it I'd accept A rank.
A- -> A+
In the absence of

imo this thing has become one of the biggest setup threats and feels like the biggest Tera roulette Pokémon currently. While Ground/Electric are the most common Fire/Water/Grass could still crop up and wreak havoc. Throw into the mix uncertainty in move sets with things like Substitute to me this one gets bumped.
Also I see this Pokémon sweep far more often than

and is one of the few Pokémon capable of bullying other top tiers in

/

/

/

/

&
A- -> A/A+
I know this one just rose but given how good it is it somehow doesn’t quite feel enough. I now see more Scarf hoopa than I do

and the other sets serve as glue of the strongest adhesion, for instance the spin blocking

or heaven forbid

. As far as un-boosted damage goes it is probably one of the better Pokémon to pressure cores such as

+

/

/

.
And the hurdles it faces in things like

/

&

it can simply pack coverage or cripple with trick. Another one similar to

it beholds some great Tera diversity with the better ones being Fighting/Fairy/Steel. But can get away with either stab typing into the niche stuff like Dark/Fire.
C+ -> U/R
Never bought into its viability for a moment. I wouldn’t expect players to believe me when I’d say I’ve only lost to it once since it was given a ranking. This Pokémon is bad.
C -> U/R
I feel the voting council missed the mark on this one.
The noms are starting to get old enough that maybe you don't even feel the same way but w/e we'll still vote on them
Frosmoth and Hoopa- deserve a bump but just to A, largely agree though
Poliwrath- no this thing is useful utility and always has been, that weird speed tier and coverage options make it oddly annoying to play against. Still carries plenty of utility in Glowbro/Amoongus meta, even if it's mad niche. I severely doubt it'll ever deserve an unranking
Mesprit- Fwiw the reason I still want to keep it is occasionally the combo of bulky pivoting that nothing really does too much to + healing wish makes it a usable defensive option. I still think we should keep it, but I also sorta think mons can be barely usable and not be worth ranking anyway because they're just that niche and specific (don't know that everyone agrees with this take) so UR Mesprit wouldn't be the worst thing.

NEW -> B+
I think this mon is about as good as it was pre-April. I thought it was slightly underrated then so this is just another help to balance, with it already being the (arguably) best archetype.
Shifts just occurred so both of these could be wrong but these are my assumptions
Again so old that maybe your take has updated but since this is the most recent P2 post, I want to state that B+ would be an insane ranking for it. C+ is where I'd put it personally as one of the people who made the only successful team with it (3-0 in team tours I think). Maybe B- if Duraludon stays lol. Being locked into Eviolite in a meta where hazards are so good sucks, our lack of cleric options means it's going to frequently get far more crippled than it ought to and even burn and regular poison add up on something that can't run Leftovers, and too many of our top threats have Knock Off or Magic Bounce or good Fighting coverage or a Thunder Wave immunity or whatever it is to make this thing just off as a defensive mon. There's a reason I think the only good set is OTR, and even when fish swapped that on his version of the team it was still offensive Charge Beam stuff. Defensive just isn't consistent and might get C at best, C+ is my take on OTR duck. Our other defensive options are just so flexible by comparison, the guy really needs like, Teleport back or something.