Sash

The old reliable Trick Room lead. Hat is Taunt immune, keeps hazards off and only loses to Fake Out or multi-hit moves. It sets Trick Room and offs itself with Healing Wish to grab momentum, usually so Torkoal can start spamming Eurption, or uses its great dual STABs to start hammering away at the opponent itself. Psychic and Fairy hit everything neutrally except Fighting types, and with Psyshock it can always hit on the weaker defense, so Hat is an immediate wrecking ball.
Specs

It’s got the lowest speed in the meta, so it just clicks Eruption and stuff dies. It’s a thing of beauty. It’s even more absurdly effective than in standard play since it hits bulky waters, rocks and dragons for SE damage.
Since the meta is so offensively oriented and frail, Eruption often just one shots resists, like Meowscarada, and hits Avalugg on its weak Sp. Def. Torkoal is also usually the Healing Wish recipient, so it can usually do it again later. Torkoal is also a great hit taking champ outside TR.
Flamethrower is for late game cleaning, if you’ve been weakened and used HW in something else. Solar Beam hits the stuff that resists fire like bulky Bugs and Grasses, and is just good strong, neutral coverage. Rapid Spin is for if your opponent somehow got past Hat and stacked some hazards.
Last note, Torkoal can also get cheeky and switch in on Abomasnow to prevent Aurora Veil. Nifty!
Throat Spray
Torkoal gets forced out by the omnipresent First Impression Loki’s and doesn’t like taking Fake Out, so a priority immunity first perfect. Armor Tail is a friggin amazing ability for this team.
The giraffe’s bulk and typing are amazing both offensively and defensively in this meta.
Hyper Voice hits through Substitues, a common TR counterplay, and activates Throat Spray. Psyshock hits the things that are weaker on the Defensive side, like Hat’s Psyshock. Nasty Plot lets you boost even more and outplay Protect and Substitute even harder.
Flame Orb

Hey, it’s just like Ursaluna, only a bit less good!
Unresisted Guts STAB Facade is simply bonkers, and it’s the only attacking move you need. Swords Dance makes it even more bonkers. Substitute lets you outplay Protect even harder, so you can get a bonus kill once TR goes down.
With this compact moveset already doing almost everything, what else could Ursaring possibly want? How about burning its only defensive checks? Fling lets it chuck its Flame Orb at Avalugg after it activates, making it so the glaciermon cannot out damage Ursaring and Rhyperior and will lose the war. Just make sure not to Fling it if you think you’ll want to Healing Wish Ursaring, as HW will heal its burn. Save it for endgame, in such cases.
Red Card

Sometimes mid game, you face a heavy hitter or set up sweeper that Farigiraf won’t be able to tank and set up TR. With Disguise, Mimikyu can survive any single hit and with Red Card, set up sweepers and Sub users get forced out. STABs are offensive and having Ghost STAB to hit Normal types is quite nice. Curse is for killing itself to get the big breakers in for free, as well as chipping defensive mons, like Avalugg.
Covert Cloak/Loaded Dice

The team was pretty solid as this point but still had some weaknesses to patch up. Strong multi-hit moves like Surging Strikes, Bullet Seed and Icicle Spear could break through Hat and Mimi. Farigiraf still had a lot of pressure on it to handle priority, namely Fake Out and Raging Bolt’s Thunderclap was a large problem since Torkoal’s Sun powers it up. Avalugg could also still be a problem, since individually it could potentially give both Torkoal and Ursaring a hard time. Finally, I just wanted another strong breaker!
Thankfully, Rhyperior handles ALL these issues in one tight package!
Rhyper’s physical bulk is amazing and Ground/Rock is a great defensive typing, 4x resisting Water and Grass, and 2x resisting Ice, Fighting, Ground, and with Lightingrod, an immunity to Electric that would otherwise be a weakness, so Earthquake and Swords Dance is obligatory for breaking. The last two moves are kind of mailable. Stealth Rock is just a filler move, but I found myself rarely clicking it. The last move should be a rock STAB, I used Rock Blast with Loaded Dice for another option against Subs, but then I found that Fake Out was still really annoying for this team, so I swapped to Covert Cloak with Rock Slide for flinchy cheesy goodness. I think I prefer cloak w/ Slide, since I still have two other options for Subs, and Rhy just kinda beats Serperior regardless by 4x resisting Grass. (BTW, why do these 90% accurate rock moves miss 100% of the time?)