I finally beat Let's Go Pikachu again! :)

The Team was:

Venusaur (♀) (Lvl 59)
-Petal Dance
-Toxic
-Sludge Bomb
-Earthquake

Pikachu (♂) (Lvl 56)
-Thunderbolt
-Double Kick
-Dig
-Zippy Zap

Gyarados (♂) (Lvl 53)
-Thunderbolt
-Flamethrower
-Crunch
-Scald

Nidoqueen (♀) (Lvl 55)
-Shadow Ball
-Toxic
-Thunderbolt
-Earthquake

Pidgeot* (♂) (Lvl 54)
-Wing Attack
-Roost
-Heat Wave
-Fly

Lord Helix (Omastar) (♂) (Lvl 53)
-Rock Throw
-Surf
-Rock Slide
-Hydro Pump

~Honorary Team Members (were on the team for a long time)~

Pidgeot (♀) (Lvl 38) (replaced by Pidgeot*)
-Wing Attack
-Quick Attack
-Fly
-Roost

Venusaur (♂) (Lvl 45) (replaced by Lord Helix)
-Razor Leaf
-Poison Powder
-Petal Dance
-Leech Seed