I feel like making a quick post about Pokemon but I don't want to reveal my thoughts on UU in the middle of a tournament. So instead, I will bother the RBY OU Community. I don't feel like composing a whole VR right now because that takes a while and it won't be counted anyway. I'll just hit a few talking points that I think are interesting. If you want to disagree with me (or just dunk on me), go ahead. I haven't even laddered recently, let alone played in a serious tournament, so my thoughts could totally be outdated or just wrong.

Chansey

I've brought up this point over a year ago and I'm going to bring it up again. I'm really not sure how someone can seriously place Chansey in a rank not alongside Tauros and Snorlax. While there is a small handful of hyper offense teams that forgo Chansey that you can dominate ladder with, I don't think I've seen a single serious match in a tournament where both players don't bring Chansey. Chansey really isn't any more or less droppable than Tauros or Snorlax so I don't really get the logic in ranking it somewhere else. These three Pokemon all have pretty much maxed out usage stats, so I really don't get it. Aside from the very very very slight drop in usage (if there even is such a thing), the only other possibility is the effect each Pokemon has on the game, but I doubt I need to explain to anyone here how impactful Chansey is on a typical RBY match.
Aside from that little rant, I just want to argue for a minute that Sing Chansey is a bit overrated. I'm always a bit biased here because Sing seems to have about a 15% accuracy when I use it, but I have other issues. I think most Sing Chansey variants (especially stuff like Triple OHKO) are really passive and very easy to exploit. Psychic-type Pokemon (Exeggutor, Starmie, Alakazam, and Jynx) all seem to be very popular right now and I think taking advantage of this trend means running more Ice Beam and Thunderbolt and less Sing. Cloyster, while a bit less popular right now, is also a very big issue for most Sing Chansey. There is obviously still room for SIng Chansey and it is a very good set, but I think it isn't as powerful as its popularity would imply.

Psychic-type Pokemon

For a while I've been considering the possibility that Alakazam might be the fourth best Pokemon in RBY OU. After a fair amount of thought, I've finally settled on, yes, Alakazam is #4 in RBY OU right now. However, it seems this take is not nearly as hot as I thought it was. While I think most people are still on team Starmie, it's not really that hard to find players in the Alakazam camp. While I think I agree that Starmie is more versatile and probably easier to put on teams in a general sense, Alakazam is just so good in this meta. Starmie and Sing Chansey being everywhere is insanely good for Alakazam as it can pretty much just muscle through these Pokemon with patience and a little luck. The way people play Chansey nowadays (usually having it eat paralysis immediately) is very conducive to how Alakazam typically strives to break through it. Exeggutor is still fairly unpopular (though it seems to be regaining some ground) which is another great prospect for Alakazam. I'm honestly surprised I don't see it more often. This all being said, I still think it is more or less a tossup between Starmie, Alakazam, and Exeggutor for #4. They are all really good.
Lastly, a note about Jynx. When I see Jynx get brought up, I usually see someone claim that while it may have a very strong and consistent sleep, it really isn't a big deal because it is basically half a Pokemon. Is this still the sentiment among top players? Because I really don't think it is true at all. Jynx is a very solid option against the most popular Chansey sets and has been enjoying Exeggutor resurging a bit. It's pretty easy to get significant mileage out of Jynx both offensively (early wakes, freezes, etc.) and defensively (using Rest is hard but not
that hard) throughout a game. Especially considering its popularity (#7 on the SPL usage stats), I think we need to seriously evaluate Jynx as a possible contender for the next best Pokemon after the Big Three Psychics. And one last thing, back Jynx is very underrated. At least on ladder, turn 1 Chansey switches are absurdly common so snatching a huge tempo completely for free is ridiculously easy with Jynx in the back.

Legendary Bird Discourse™

Now, I'll be the first to admit that win rate is a very heavily flawed statistic and you really should not take it seriously. However, I must say that 38.46% win rate in SPL definitely caught my attention. It was the kind of confirmation I needed for my very long-held belief that Zapdos is kind of not that great. Now, I'll admit, I'm incredibly biased. I use Rhydon and Jolten
a lot so the idea of struggling against Zapdos is a little foreign to me. For me, I find Zapdos very easy to dispatch and a pretty major liability in a lot of games. The Pokemon that handle Zapdos well are just way too common and strong for me to feel comfortable treating it as a serious contender for the #7 slot. I think it is much easier to boot up a team with Jynx, Rhydon, Cloyster, and possibly Jolteon and feel comfortable that you can win. I also don't think its good matchups are always worth it either. A competent player can still outmaneuver a Zapdos without having a dedicated check like Rhydon, Golem, or Jolteon. Obviously I don't think Zapdos is a bad Pokemon by any means, but I am personally more comfortable putting it closer to #10 than #7.
Now for the other two. I read through Troller's post on Moltres and it made me realize something, and I don't think that something was Troller's goal. That something is that Articuno is really not very good in RBY OU. Like seriously, this Pokemon has so little to do in the current meta. Chansey, Starmie, and Cloyster being everywhere prevent Articuno from finding a home on pretty much any team. I think Articuno is falling into the same pit Lapras did last year, but I honestly think Articuno's case is significantly worse because Lapras can at least salvage some viability with Thunderbolt and some of the other stuff in its kit. Forget Moltres, I honestly think Lapras, Dragonite, and Victreebel are all probably better than Articuno right now.
Anyway, I still largely dislike Moltres. My issue isn't really that Fire Spin is bad, it is just frustrating to rely on options like Fire Blast for damage when they miss as often as they do. I don't like committing to a Pokemon that has trouble dealing damage even in good matchups (*
cough* Victreebel *
cough*). That said, I think I was probably a bit too harsh on Moltres overall. I think Troller put it really well in his post. Moltres doesn't welcome in really strong attackers (unlike Zapdos) and can actually handle most of the meta-relevant Pokemon (unlike Articuno). I don't personally see Moltres as a B Rank choice, but C seems reasonable. The usage has to be at least in striking distance of Slowbro for me to be convinced otherwise.

Some Others

Now for some thoughts on Pokemon that don't really matter. I feel like Persian is in an incredibly weird spot in the meta. Everyone seems to tacitly agree that Persian is good (myself included), but virtually no one ever uses it. I have seen so much information about Pokemon of comparable strength (Articuno, Moltres, Golem, Dragonite, Victreebel, etc.) and almost nothing on Persian. No replays, no theory, nothing. Like genuinely, is there anything anyone wants to say about this Pokemon? And just to add to the nebulousness, I'm going to throw in Kangaskhan as well. I think Kangaskhan is actually pretty solid, but I'm not going to provide any evidence.
Kabutops seems neat right now. I seldom dip this low in the VR when building a team, but the meta actually seems pretty okay for it right now (well, as good as it can get for a Pokemon as good as Kabutops). Sandslash is another Pokemon I want to bring some attention to, as it wasn't used at all in SPL. I don't think the current meta is particularly good or bad for Sandslash, I just think it is a decent Pokemon. Maybe it can abuse teams that rely heavily on Rhydon and don't use Exeggutor or something, I don't know.
Maybe I'll add some more thoughts in later. I'll need to reread this and edit later, as I'm sure it's messy. As I said, feel free to respond if you want. I more want to open conversations that I think are interesting than actively convince someone they are right or wrong here. Cheers!