I would give them something else than Levitate. It feels like Leviate is just a cheap and easy way to represent non-typed Flying Pokémon, but at the expense of getting a more interesting ability. That's just me thoughStill holding out hope for Galarian Dragonite, possibly Salamence too. It boggles my mind that they’re not in the game yet because of how popular they are.
Since regular Garchomp is confirmed for Crown Tundra I had to modify my initial thought but it still works to make an elemental trio of Galarian Pseudo-Legendaries:
Electric/Dragon Dragonite with Levitate
Ice/Dragon Salamence, also with Levitate
Fire/Steel Metagross (Beldum confirmed already but not further?)