Here are recommended builds for each playable Pokémon.

Venusaur Sludge Bomb Solar Beam Focus Band Shell Bell Wise Glasses Charizard Fire Punch Flare Blitz Muscle Band Buddy Barrier Energy Amplifer
Pikachu Electro Ball Thunderbolt Energy Amplifer Shell Bell Wise Glasses Alolan Ninetales Dazzling Gleam Aurora Veil Muscle Band Wise Glasses Buddy Barrier
Wigglytuff Sing Double Slap Buddy Barrier Shell Bell Wise Glasses Machamp Submission Cross Chop Muscle Band Focus Band Scope Lens
Slowbro Surf Telekinesis Buddy Barrier Shell Bell Focus Band Gengar Sludge Bomb Hex Special Attack Specs Shell Bell Wise Glasses
Mr. Mime Confusion Barrier Energy Amplifer Buddy Barrier Wise Glasses Snorlax Heavy Slam Block Buddy Barrier Focus Band Score Shield
Gardevoir Future Sight Moonblast Energy Amplifer Shell Bell Wise Glasses Absol Pursuit Psycho Cut Muscle Band Focus Band Scope Lens
Garchomp Dragon Rush Dragon Claw Muscle Band Focus Band Buddy Barrier Lucario Power-Up Punch Bone Rush Muscle Band Focus Band Buddy Barrier
Crustle Shell Smash X-Scissor Buddy Barrier Score Shield Focus Band Greninja Smokescreen Surf Muscle Band Focus Band Buddy Barrier
Talonflame Flame Charge Fly Focus Band Score Shield Scope Lens Zeraora Spark Discharge Muscle Band Scope Lens Energy Amplifer
Cinderace Blaze Kick Feint Muscle Band Scope Lens Buddy Barrier Eldegoss Pollen Puff Cotton Guard Exp. Share Focus Band Buddy Barrier
Cramorant Hurricane Surf Buddy Barrier Shell Bell Wise Glasses Blissey Hurricane Surf Buddy Barrier Shell Bell Wise Glasses