After the most recent wave of bans, I reached the top of the ladder.
Here's my team
Last two games as of writing:
https://replay.pokemonshowdown.com/gen9alphabetcup-2294577674
https://replay.pokemonshowdown.com/gen9alphabetcup-2294572594
Meet the team:
Ogerpon does little more than reprise its role in OU. O has some decent moves, none of which Ogerpon would slot over its existing movepool. My team has it with Knock Off, but with the trouble dragons tended to give her, I would slot Play Rough. Knock Off's main perk is being a permanent way to make Spikes a threat to Pex. I like how Slaking will Skill Swap and then I can tera and get rid of Truant.
In stark contrast, Great Neck is rewritten in Alphabet Cup. It's still either a bulky offensive pivot or a sweeper, but the way it does that is changed. Rapid Spin and Recover give it greater utility and longevity, Revelation Dance serves it's moveset by working with Terastalization, making it an upgrade to and combination of Thunderbolt and Tera Blast. Tera Fairy is my choice due to the amount of Dragons in the tier that get greedy and think of Great Neck as a free speed boost with Scale Shot. The initial reason I chose Great Neck is it being electric type and fairly bulky gives it a very strong matchup against Glare Gholdengo, as well as blocking Skill Swap.
Special tank. Burning Bulwark is stupid on Blissey. It's not good, it's not bad. To me this is the most ladder cheesey part of my team. Chilly Reception may be a more reliable move on it in the long run. Haze keeps boosting special mons in check. Seismic Toss makes it an actual Pokemon instead of being a sponge on the team.
This team uses the standard Toxapex set. This is really the wall of the tier. Spinning is the biggest utility it provides, and Topsy Turvy prevents a lot of sweepers from getting going.
I did not use Corv for awhile, but once I started it was a night and day difference. The biggest threats to my team beforehand were a lot of strong set up sweepers like Dnite, Mence, and Luna. Corv checks a lot more than that, but putting it on my team improved my match ups so much. I understand the Cotton Guard Body Press sets, but Corv is still a more active part of the team by just Rapid Spinning, pivoting, and phasing. Rapid Spin is often overlooked for Mortal, but Ghosts are fewer than Steels.
Glare is the biggest point of contention in the tier for me. Glare is the biggest enabler of this team. Obviously it lets me win games I shouldn't, but the power level of the tier makes this often the only consistent defensive counterplay. It is much easier to paralyze than it is to burn, in my experience. If there was a good, consistent to burn a Salamence or Slaking, I would always do that over Glare. I end up burning Cinderace more often than any other mon. Glare is the most efficient way to deal with offense. Gliscor is fast enough to 2hko Gholdengo, who can also 2hko at +0. Spike stacking is very strong when 60% of team's only way of dealing with hazards is Mortal Spin, which is blocked by Corv. Scouting is necessary against a lot of Pokemon like Specs Primarina and Volcanion as the most consistent.
Now that some of the dust has settled, I'm going to give my opinion some. I would put Glare on a watch list. It's annoying, especially with Gholdengo whose Hex strengthens up doing so. Gliscor is annoying by getting more free turns to heal and stack Spikes. Garchomp and Goodra are annoying in the usual para ways, but they're fine. Salamence is also just incredibly oppresive. In my experience, it's best set is Ddance/Scale Shot/Bone Rush/Sacred Fire. With the right positioning, especially with Glare support, it takes games way too easy for me to not mention it. Terastalization thought is something that I can't really formulate thoughts around. I'm unsure at this time whether is a negative influence or not. However, the current state of the meta is comfortable atm. There's not many games that I don't enjoy.
That's why I play semistall, the games are longer.
and maybe Tera 
is solid with additional moves such as Strength Sap, Mortal Spin, Milk Drink, Stone Axe
with Skill Swap is threatening unless you have some Protosynthesis/Quark Drive so perhaps this should be on radar.
& 
can abuse it thanks to Prankster and get free Torch Song on the next turn)
can set it by itself, specs 
simply spam STAB Boomburst (and even learn Psystrike to annoy Toxapex), 
gets Secret Sword...
