So I got into the top 5! That doesn't really mean a huge amount on PS, but I did 67 matches, so I think I got a decent impression of what the metagame might end up like. I'm gonna go over what I think of some Ubers and regular mons!
Ubers I've seen
Calyrex Ice Rider
I think people are massively sleeping on this thing, Calyrex Ice Rider is a TERRIFYING sweeper. You know how nasty Glastrier TR teams can be? Imagine if Glastrier was bulkier, more powerful, and set up its own Trick Room! Seriously, the sheer snowballing potential of Life Orb Calyrex Ice Rider makes it a terrifying threat and damn near impossible to wall, I'd suggest giving it a try!
Calyrex Shadow Rider
Unlike Ice Rider, I actually think Calyrex Shadow Rider is rather over rated. With Mimikyu and Ditto being around, it's really easy to cheese Shadow Rider into the oblivion. I think this thing's best bet may be a Sash set to deal with Ditto, though even Stealth Rock makes that fail. Unlike Ubers, I just don't think Shadow Rider makes a ton of sense in this format.
Dusk Mane Necrozma
Not exactly shocking news, but yeah this thing is pretty damn good. It's insanely hard to KO, and both Dragon Dance and Trick Room sets are pretty fearsome sweepers! It also preforms really well against Calyrex Ice Rider, much to my chargin lol. Just note though, with Celesteela, Quagsire, and Ferrothorn being around, this is actually easier to mess with than you may think.
Yveltal
This is another mon I think people are sleeping on. It might not get Nasty Plot like Galarian Moltres, but its WAY more bulky and powerful otherwise. Not only is it a terrifying Max Airstream sweeper that hits hard right off the bat, they can also use more defensive sets with Foul Play and the likes.
Zacian
I mean, of course Zacian is a threat! It hits hard and is fast as fuck, hard for it not to be a threat. However, just note that it's very vulnerable to Scarf Ditto, and it actually isn't that hard to KO either. I do wonder if a bulkier set might make some sense...
Kyogre
I think everyone needs a Pokemon dedicated to handling Kyogre, not much can really handle Scarf Water Spouts! I personally use Rillaboom just to put pressure on it, but I wonder about more defensive options like Gastrodon (and Blissey if you're using stall).
Ho-Oh
This mon is pretty dangerous, its an extremely bulky Max Airstreamer that hits Steel-types hard. You can use it with Heavy-Duty Boots too so you can really take advantage of regenerator!
Lugia
I didn't actually see Lugia a whole lot, I just want to note that I lost my Calyrex Ice Rider to a Sub-stalling one LOL, curse that 8 PP...
Non Ubers I saw
Ditto
Choice Scarf Ditto is insanely good in this metagame. It's not just the usual reverse Dynamax sweep stuff: it's that you can use it to cheat your way into having two Ubers! It's especially helpful against Zacian. I can't recommend Ditto enough, its an easy last slot fill in imo!
Regieleki
As you'd expect, Regieleki makes a pretty damn good Dual Screener. I'm not convinved it's the only good one, but it's served me well, and it makes bulky sweepers such as Calyrex Ice Rider and Dusk Mane Necrozma scary as hell!
Urshifu
With all the dangerous physical Dynamax stuff roaming around, I think Sash Counter Urshifu is still really good! I prefer the Dark-type one in this case, because theres a lot of Pokemon that get hit hard by Wicked Blow, which is especially important with all the dual screens flying around.
Mimikyu
Mimikyu is about as good as you'd expect with Disguise being incredible, though just a note: it tends to not do well against a lot of the Dynamax legends except for Calyrex Shadow Rider. This isn't quite as good as I expected, but it's still good.
Cinderace-Gmax
Gmax Cinderace is still a damn good sweeper in this metagame! There is a twist to it though: With so many dual screen teams and Landorus-T flying around, I'd suggest using Focus Energy + Scope Lens, which allows Cinderace to not care about its attack getting lowered.
Rillaboom-Gmax
With Kyogre roaming around, Rillaboom is still really damn good! There's a lot of good mons that resist Grassy Glide, but CB Rillaboom can do its usual U-turn pivoting just fine.
Landorus-T
Landorus-T has some pretty juicey Intimidate targets such as Zacian and Dusk Mane Necrozma, so I think it's still quite good! It's also a very reliable setter of Stealth Rock, but offensive sets still work just fine imo.
Quagsire
Quagsire does really well against Zacian and some Dusk Mane Necrozma, so I'd expect to see this around more than you'd expect. Make sure your team isn't walled by this thing!
Celesteela
This isn't as crazy as it is in BSS, but it does very well against Dusk Mane Necrozma, which makes Celesteela worth a look. I'd say stick to the Subseed set, but offensive might do pretty well against Zacian too.
