im late so 4 one liners before my vote
cress sux cos the point of knock off is getting rid of recovery, and now you rely on the best recovery move in the game which has so much pp that if 1pp=1$ you can buy 8 whitehouses and still have some left for a cruise to mars, not to mention nice sandstorms and status. good typing but it's biggest issue is the recovery
doublade does the same thing it did earlier and now checks gar. im new but i like the old times when tmon was about fixing what was bad about a mon, and doublade not checking gar is not it's problem, it's recovery and reliance on eviolite
idk what shaymin does, does it have any fairy stab even? and it still doesn't have recovery but at least nice stab combo to be a fat grass over celebi and not die to every uturn
idk what unaware mandi does, it has foul play for all physical set up mons, so the best you did is make space for toxic/taunt over foul play?
Shaymin + Grass / Fairy-typing and Flower Veil is my vote