see above. azumarill is pretty much required on mono fairy due to the sheer power it can deal over something like wigglytuff. i would highly recommend gardevoir as well, as it's easily the fastest fairy type, and your team gets outsped very easily.
a lot of your sets are very strange. for example, is sylveon supposed to be bulky or a set up sweeper? calm mind should be paired with wish, and not heal bell, as any of these fairy's can pretty much use aromatherapy or heal bell. on the other hand, if you want defensive, drop the calm min for wish anyways. dazzling gleam is redundant with pixilate hyper voice, and you're much better running baton pass or a coverage move like psyshock or shadow ball.
slurpuff can use unburden and sweep, but instead you have her set to a defensive role. that's fine, but again, calm mind is a strange move to put on a defensive set. if you want an offensive sweeper, go with calm mind, draining kiss, surf, flamethrower, and put on a sitrus berry or red card. if you want physical, go with belly drum, drain punch, play rough, return.
don't run pixie plate on your granbull as you only boost one of his 4 moves. instead, try life orb or choice band, and throw on eq and fire punch instead of crunch and payback. that way you at least can hit steel types, and payback is kinda useless competitively anyways.