*=You mentioned this in your answer
Normal: Mega Lopunny (135)
Fire: Talonflame (126) *
Water: Ash-Greninja (132) [You did mention Greninja]
Electric: Electrode (150) *
Grass: Mega Sceptile (145) [You did mention Sceptile]
Ice: Weavile (125) *
Fighting: Pheromosa (151), assuming UBs are not allowed / Mega Lopunny (135)
Poison: Mega Beedrill (145)
Ground: Dugtrio Kantonian-Form (120) *
Flying: Ninjask (160) *
Psychic: Mega Alakazam (150) [You did mention Alakazam]
Bug: Ninjask (160) *
Rock: Mega Aerodactyl (150) [You did mention Aerodactyl]
Ghost: Mega Gengar (130) [You did mention Gengar]
Dragon: Mega Sceptile (145)
Dark: Ash-Greninja (132)
Steel: Mega Lucario (112)
Fairy: Ribombee (124)