I barely missed out on qualifying for DLT, but I still wanted to share the teams I built during the tournament.

This was the first team I built, and I used it up to around 1700. I put together a bunch of Pokémon that match up well against common ladder archetypes.
Wellspring helps shut down a lot of cheese strategies with redirection and Taunt.
Okidogi and Gholdengo often win games on their own, especially when supported by Mew through Coaching and Pollen Puff. Mew also provides Stealth Rock, which is generally strong on ladder, and Snarl to handle Psyspam more easily, while Chien-Pao removes terrain and screens.
I went with Dragonite last since I didn’t have a Firepon switch-in and needed speed control, and it’s also a great Coaching target.

I dropped Dragonite for Ting-Lu because Mew felt really awkward to use without speed control, and adding Ting-Lu freed up two of Mew’s move slots, allowing for a more efficient moveset. That said, this version still struggled with speed control overall, so I didn’t end up using it that much.

This is the team I ended up using the most. I really liked Coaching + Dragonite from the first team, but this time I went with Sneasler, which is a better user thanks to its higher Speed and access to Fake Out.
I then added Kingambit since Sneasler and Dragonite struggle a lot against Intimidate, so I needed a way to discourage it. AV Gambit pairs really well with Coaching since it can’t boost on its own, and Brick Break lets Chien-Pao run the Icy Wind set, which is especially threatening when paired with Landorus. Landorus also replaces Gholdengo as the team’s special attacker, as the team already has a Steel-type in Kingambit.
Bonus Teams

I would 100% use Sneasel if it dealt more damage and Dire Claw wasn’t a get-out-of-jail-free card. Inner Focus is a crazy ability to have on a mon like this.

I never actually used this team, but it’s basically the Mew team with Gouging-Fire replacing it to click Howl instead of Coaching, and Scarf Gholdengo for speed control.
Big shoutout to all the players who qualified and good luck in playoffs!