Tbh this looks like one of the more healthier metas to come out of all of the DLC 2 drops, gives me a less power crept SM vibe. There's not many obvious bans outside of the quickbanned Ubers and maybe the Expanding Force / Rising Voltage Tapu Lele or Tapu Koko drops respectively, but who knows at this stage. Genesect does really appreciate the Hidden Power removal in gen 8, but I still think it's far from broken, especially with a bunch of great Fire-types being able to fit on a variety of playstyles, most notably Incineroar and Victini being meta staples. Speaking of Victini, I think the banlist should be looked at in DLC 2:
Final Gambit should be quickbanned. Giving a base 100 all around Pokemon Final Gambit is absolutely absurd and there can be a case made that other Pokemon can also use Final Gambit effectively.
Kyurem-B in my opinion should be suspected to be unbanned. While being miles ahead even after DLC 1, it finally matches some Pokemon in DLC 2, and seeing that power creep would now be around the level of BW, and the Fairy-type existing, a lot of the new Pokemon have a good matchup against Kyurem-B and I think it could potentially be healthy in the tier.
Yeah ban this lol
Okay that's it on banlist changes, unless I'm forgetting something important. Now onto what I think benefits or loses out the most with the new editions.
Benefits:
Speed control (Tailwind or TR)
While Tailwind has seen use in Gen 8 2v2 so far with Talonflame or Whimsicott usually being the main setters, TR has been a rare strategy for a while with Porygon2 being the only big setter and not many great abusers of TR that wouldn't just appreciate being without it.
Now, with the new editions in DLC 2, Tailwind and TR will definitely be much better. Tailwind gets Zapdos, Suicune, and maybe Tornadus could all be great setters, while there are a bunch of new additions that could abuse it, like Heatran (isn't forced to run Quiet anymore wheee), Zygarde, and basically anything that would benefit from getting the new same-turn updated speed mechanics. TR on the other hand gets Porygon2 (main setter), Diancie (possibly second setter), and Cresselia (alternative main setter) as TR setters. While the amount of Pokemon that could benefit from being on TR is lower, they definitely make up for it with the amount of raw strength they can bring to the table. Heatran, Zygarde, Tapu Bulu, Diancie, and Volcanion will all probably work the best in TR. I could also see Incineroar being a good support pick on TR teams.
PsySpam
LeleZam seems like an amazing core. Indeedee-F can really just be thrown out as Tapu Lele just brings much more to the table 90% of the time. 130 SpA + Fairy type + Expanding Force + being able to set PsyTerrain is just amazing, and this will probably get banned later on. Maybe Indeedee-F having HH / Follow Me is a small niche, but why do redirection when you can just kill the things you were scared of lol
Loses out:
Mew
Mew is gonna have to be stretched more thin now, as a bunch of the new Pokemon introduced are able to nuke through it or Taunt it, forcing it to run Mental Herb, bulk, etc. It'll probably still be a great threat but it still has to worry about Taunt being on even more great things along with PsySpam / Fake Out both still being very prevalent.
Urshifu
Does not like the new meta at all, with Tapus returning, and meta getting generally faster overall, like Latios, Kartana, Naganadel, Landorus-I, Garchomp, Genesect, and Victini can all put a dent into non-Scarf sets before being hit. With the right support it can still be good, though, just I don't think it'll ever return to its DLC 1 days.
Weather
Sun and Sand already lost relevancy in DLC 1, with Rain still being a middling archetype, and Hail being non-existent, DLC 2 brings nothing to the table in terms of weather abusers, other than some random bad Pokemon that get Swift Swim. I think the weather war archetype will be replaced mostly by Terrain wars in DLC 2.
One more thing I want to talk about, here is my tier maker list for DLC 2, and why I ranked them where I did.
Quickbanned before the meta starts:
n/a
Top tier:

Even with Final Gambit probably being banned, Victini will definitely still be great. Base 100 in every stat with great offensive coverage with moves like V-create, Blue Flare / Fusion Flare, Bolt Strike / Fusion Bolt, Energy Ball, Focus Blast, Grass Knot, Thunderbolt, Psychic / Psyshock, Expanding Force, Scorching Sands, and Zen Headbutt among more at its disposal, along with decent supportive coverage with Helping Hand / Taunt / Encore / Trick / Trick Room (lol) / Will-O-Wisp / Psych Up also being great, just make it a very versatile threat that deserves to be at the top.

It's Genesect, doing the same thing it's been doing every gen. Download is a great ability that can pressure the opponent and physical, special, and mixed are all viable options, with a ton of coverage moves at disposal.

Zygarde is back again, and assuming Power Construct is banned, I can see this running a Band set probably in TR like it did in previous gens. Nothing really to say about this other than it's raw power and bulk will definitely make it an excellent threat.

They get rising voltage and expanding force lol

I'd say it's basically Rillaboom but trading off Fake Out for the nice Fairy-type and STAB Play Rough to handle Dragon-types and Urshifu easier.
Pretty good:

Premier Tailwind setters, each with their own weaknesses and strengths.

Life Orb is gonna be a gigantic nuke on teams, and a big threat to watch out for. Doesn't really appreciate the Steel-types and Fairy-types on top, though.

Eruption + Choice Scarf OR Tailwind OR Trick Room go big brr

Alternate Porygon2 on TR, trading some bulk, power, and coverage for a free item slot that P2 wishes it could have.

Prankster Thunder Wave + Taunt while not being what it once was in BW is still a massive threat and Thundurus unlike other Pokemon has an actual offensive presence.

Rock + Fairy is an interesting type combo, it's about 50/50 versus most of the meta and could definitely be a good TR setter / abuser with Weakness Policy or Air Balloon.

Just a cool mon that can be nice on TR again. Water type is nice for opposing Fire-types.

Possibly a staple on hyper offense teams, Beast Boost + 181 Attack and the Steel-type that the meta needs will definitely be good.
Mid:

Speed Boost is interesting, I think it would work best under redirection with something like Amoonguss, as it definitely has a chance to sweep teams with support especially now that it isn't forced to run unreliable moves like Superpower or Low Kick as powerful Fighting stab, (CC available)

Decent Intimidate setter with balanced attack / spa and nice 100 speed. Nothing too notable just looks like a decent Pokemon all around.

While not excelling at anything in particular, powerful STAB Meteor Mashes coming off of a base 135 Attack along with it being immune to Intimidate is something to be aware of.

Will probably take the stall role to Latios as it did in gen 7 albeit as mega.

Again with Metagross, nothing about it really excels but it has some decent matchups along with a naturally high Attack and Speed stat. Rough Skin could probably come in clutch in some situations.

Sheer Force boosted moves can OHKO a lot of unbulked targets, this is borderline pretty good tier, but I feel that the meta will end up getting bulkier over time. The lack of HP ice both helps but mostly hurts it.

Interesting case in 2v2, Misty Terrain is weird in the meta and I feel like this will get much less attention than the other Tapus. I frankly don't even know what it ran in gen 7 so I'll be interested to see how it turns out here.

Two Poison-types that punish the common Fairies for coming out on the field. Beast Boost will be pretty nice.
Probably will have a niche

Idk it's p fast and decent attack so it'll probably at least have a tiny niche

Multiscale + Tailwind maybe? Idk I see a bunch of people using Dragonite in random gens but never see anyone successful with it.

Decent support mon with Inner Focus and neat moves like Super Fang, Taunt, and Roost.

Inner Focus is cool, Raikou gets a bunch of new coverage in this gen while Entei just does Eruption stuff.

Someone will probably find a niche for it, gets CC in this gen which is cool

Fast AF mon with Beast Boost and super high base Attack and SpA make it an instant threat on the field, the big downside being how low its stats are otherwise, along with not many high BP moves.

Tail Glow is cool and can do well with support. Can also probably find a way on to Electric Terrain teams since it gets Voltage now.

bulky bitch with a bunch of different options idk

Beast boost go brr ig, immunity to Fake Out is also nice.
Likely Unviable
i aint explaining these
Oh yeah and
I realize that the Therian formes weren't on the tiermaker, even though they're going to be released in DLC 2. I'd say TornT will be unviable, ThunT I'd say is a Mid tier mon, being able to Volt Absorb Rising Voltages and having a 145 SpA at its disposal is really nice. LandoT could probably end up in Pretty Good tier, since Intimidate along with a good typing and decent coverage is really nice.
okay well that's it some of this was probably dumb because im tired lol