Hello there, throwing my hat into the ring because Wynaut, here is a sand team that uses Spectrier. Man I love having a meta where Ttar is viable again.
Importable
Breakdown
Importable
Breakdown
Spectrier provides fast support for my team in the form of Taunt and Will-O-Wisp. On this team it's a better choice than Dragapult as it doesn't stack weaknesses with Tyranitar and Dracozolt. The EVs are pretty straightforward, max Speed max HP. Shadow Ball is a decently strong attack. Bulldoze lets Tyranitar proc its Weakness Policy, and since it's very fast and immune to Fake Out, it will nearly always go first. It also gets around redirection. Safety Goggles is used as Mienshao is holding the Focus Sash and it takes away the damage from Sandstorm.
Pretty standard Ttar set, nothing to write home about. Rock Slide is a great spammable STAB. Lash Out lets me take advantage of Bulldoze's Speed drops and opposing Snarls. Superpower has fantastic coverage with Ttar's STABs, and gives me Max Knuckle when dynamaxed. Tyranitar's job on this team is both to hit really hard and provide Sandstorm support for Dracozolt. Great bulk and lots of weaknesses make Tyranitar a fantastic Weakness Policy abuser. The only weird thing on my Ttar is the EVs, but there is method in my madness. Jolly with 152 EVs outruns Urshifu at +1 and Dragapult at +2, so if they have an Urshifu I can dynamax Dracozolt, use Max Airstream and then pummel it with Superpower (note doesn't work on Urshifu-R).
I chose Dracozolt over Dracovish as it has much better synergy with Tyranitar in my opinion. It resists the Steel, Water and Grass moves Tyranitar is weak to, and it can Dynamax without cutting off the Sand. It also checks Venusaur that lack Earth Power, as it resists G Max Vine Lash and can set up Electric Terrain to block Sleep Powder. Bolt Beak is the main Attack, hitting like a truck if it goes first, which in Sand it usually will be as it outruns Timid Regieleki at +2. Dragon Claw hits the Dragon types that resist Bolt Beak hard. Protect is standard in VGC, while Pluck lets me steal opposing Berries. It also gives me a Speed boost with Max Airstream, so I'm not as reliant on Sand and Tailwind support.
So with 2 Pokemon weak to both Fairy types and Landorus-T, I needed another sweeper that can deal with both of those Pokemon. Enter Celesteela. This is running an offensive spread, as defensive Celesteela is much too passive for this heavily offensive team. Meteor Beam lets Celesteela boost its Special Attack without Beast Boost, and when Dynamaxed it lets me reset Sandstorm. Air Slash is a reasonably strong STAB that also gives me Max Airstream when maxed. Lastly, Fire Blast lets me scorch opposing Steel types. EVs are simple, max Seed max Special Attack. Power Herb means I don't have to charge Meteor Beam. I didn't run Autotomize as I have Tailwind support and can boost with Max Airstream. Spectrier can also slow faster mons down with Bulldoze.
Standard support Whimsicott, the only difference is it's running a Coba Berry which lets it live a Max Airstream from non Life Orb Thundurus (Life Orb has a 43.8% chance to OHKO) with the given EVs). Tailwind gives Dracozolt a nice Speed boost outside Sand, letting it get the most from Bolt Beak. Protect blocks Fake Out. Moonblast is there in case Whimsicott gets Taunted; it can also trigger Tyranitar's Weakness Policy. Charm is used to subdue physical attackers, mainly the Ground types that Tyranitar and Dracozolt are weak to like Garchomp and Landorus-T. Max Speed and max HP give Whimsicott the most opportunities to fire off Tailwind and Charm.
Last but not least, Mienshao provides a great answer to Incineroar and opposing Tyranitar. Great Speed + Fake Out immunity means it can nearly always get a Coaching off, making Dracozolt and Tyranitar absolute monsters. For reference at +1 Def, Dynamaxed Tyranitar comfortably lives a Strong Jaw boosted Fishious Rend from Scarf Dracovish ( 252 Atk Strong Jaw Dracovish Fishious Rend (170 BP) vs. +1 104 HP / 0 Def Dynamax Tyranitar: 210-248 (55.8 - 65.9%) -- guaranteed 2HKO). Fake Out lets me pressure opponents and get off some free damage. Close Combat wallops Incineroar and opposing Tyranitar. Coaching lets it power up Dracozolt and Tyranitar - even Celesteela appreciated the Defence boost. U-turn lets it safely bring in a teammate - it can also trigger Tyranitar's Weakness Policy.