I agree with Ray Jay with the amount of innovation that is possible now. I've stated it before, but the amount of scarfers that have suddenly become viable is outstanding, because you no longer need something that is able one-shot Misdreavus. We have Pokemon like Amaura and Snover, who's Ice-type STAB is actually pretty decent in the meta, and Snover especially can limit Ponyta's recovery, fuck with sun, and handle Water-types with Giga Drain. Gastly is probably one of the most used scarfers rn, because it's so powerful and gets Trick. I can see Frillish being a decent scarfer with Water-spout and trick, Cranidos is a nice scarfer that has a really useful Flying-resist so Fletchling can't fuck it over with Acrobatics. Mienfoo is a really underated scarfer, taking on a more offensive role with HJK, which is 10x better now that Missy isn't everywhere - the thing I like about Mienfoo is you don't need to play as safe, because you can switch it into hits that can't quite OHKO, and then take them out, switch out and get 33% health back - other scarfers can't afford to lose health so easily. Like Foo, Bunnelby is an amazing U-turn scarfer that likes the loss of Misdreavus, I expect it to have a large impact on this meta. Volt Switch users like Chou and Magnemite become nice scarfers again (though Magnemite was always good imo). But yeah there's loads of Pokemon that you can slap a scarf on and call it a revenge killer now.
As for sun: I feel like it's always been good, but I see it coming into the limelight, especially if lucy keeps spamming the fuck out of it. If you don't use Fletchling, Sun is actually really hard to prepare for, especially when you take into account Bellsprout's Sleep Powder. I've been using Rest-Talk Munchlax with Stall, or Fletchling with Offense, and either with Balance just to be able to beat it reliably. I think a Cloud Nine Lickitung set might work, but it loses Wish+Tect so it's probably outclassed by Munch. Hippopotas is a nice switch-in to Bellsprout, and it's a really strong Physical wall that can check a plethora of Physical threats, like Fletch, Bunnelby, Fighting-types, Drilbur. And as I mentioned before, Snover can do work vs. sun, especially if you get rocks up to mess with Vulpix.
I haven't seen much Timburr recently, I feel like everyone just runs Mienfoo. This is nice and all, but Shell Smashers are basically the best set-up sweepers in the game atm, so I expect Timburr and Croagunk to make a resurgence of usage with their prio. Mienfoo hype needs to die down, I know it's the best Pokemon in the meta right now, but if you find yourself building a team that gets wrecked by Omanyte or Binacle or Shellder, which often happens, try out Timburr + Gunk.
And as people say, fuck Chinchou. Like seriously it causes so many 50/50s with it's Water STAB vs. Volt Switch, it's an amazing momentum grabber, probably the best pivot in the game (even better than Mienfoo imo, I'm serious). Chinchou is the best counter to itself as well which is annoying as fuck, which just promotes its own usage. I wouldn't be surprised If Chinchou ends up the no.1 most used Pokemon by the time the next suspect comes along. Best other switch-in is Goldeen, which can do some work, but hates Scald-burns which is annoying. Basically if there's no Ground-type or Lightningrod/Volt Absorb Pokemon, Chinchou is a fantastic momentum gainer, and it can wear down opposing Chinchou with HP Grass/Ground and threaten Ground-types with Scald/Hydro Pump, making it a large risk switching them in.
On the topic of Chinchou counters, why is no-one using Lileep - It's got a great typing, can take on all Water-types, can use its massive bulk to check a load of Offensive Pokemon like Fletch, Smashers, Carvanha, Drilbur, Abra, Ponyta, Zigzagoon. Unlike other Rock-types it doesn't get wrecked by Diglett which makes it one of the best counters to ZigDig or Bunnelby+Diglett.
Also, great as ever to see a Ray Jay post, you don't play LC anymore, but you still make the most relevant and insightful posts.