Im far from an expert but i think mew has recently started using fst accelgor to hit weakness as well as a good prize trade, and i guess lost box could run a shaymin v or something similar. No clue for miraidon though
I feel like ogerpon could also change forms based on held items for the masks, similar to seal stones/tms for additional move or two that also add the additional type
People are saying this is bad, and while i am agreeing that it is a bit underwhelming, i didnt get any of the tins so i am absolutely getting this. Also i love eevee so that factors in too