Quoted By:
Comfey
Mimikyu
Wishiwashi (only solo is small)
Dedenne
Ditto
Eevee
Cleffa
Vulpix/A-Vulpix (Sun and Hail setters)
Uxie
Mesprit
Azelf
Durant
Carbink
Minior
Pyukumuku
Togedemaru
Kartana
Pikachu
Pachirisu
Qwilfish
Sableye + Mega
Torkoal
Cherrim
Cinccino
Togetic
Porygon 2
Mawile + Mega
A-Raichu
Swellow
Excadrill
Whimsicott
Toxapex
Raichu
Jolteon
Azumarril
Jumpluff
Masquerain
Shedinja
Hippopotas (Sand setter)
Glaceon
Galvantula
Accelgor
Aromatisse
Slurpuff
Hawlucha
Lycanroc (Sun)
Flareon
Espeon
Sneasel
Octillery
Roserade
Gastrodon
Mismagius
Honchcrow
Porygon-Z
Boldore (Sand setter)
Swoobat
Lurantis
Bruxish
Beedrill (Mega too big)
Sandslash
Parasect
Primeape
Persian
A-Muk
A-Marowak/Marowak
Vaporeon
Omastar
Umbreon
Bibarel
Purugly
Tangela
Leafeon
Snover (Hail)
Simisear
Simipour
Reuniclus
Escavalier
Ferrothorn
Chadelure
Diggersby
Heliolisk
Sylveon
Compiled everything that looked usable and semi-decent and filled one or two niches. Probably missed a few.
I recommend to pack either Trick Room or lots of anti-Trick Room.