My Pokemon:
Tapu Koko
Ferrothorn
Urshifu-Rapid-Strike
Sableye-Mega
Dragonite
Garchomp
Iron Valiant
Kyurem
Ursaluna
Clodsire
Baxcalibur
Mimikyu
Ninetales-Alola
Ting-Lu
Rotom-Wash
Gallade-Mega
Araquanid
Cloyster
Honchkrow
Abomasnow-Mega
Weavile
Lilligant-Hisui
Regieleki
Heatran
Charizard-Mega-X
Volcarona
Galvantula
Scizor-Mega
Gholdengo
Zapdos
Corviknight
Cinderace
Torkoal
Skeledirge
Froslass (originally Spectrier, which was later banned)
Iron Hands
Zeraora
Vivillon
Forretres
Excadrill
Celesteela
Great Tusk
Hippowdown
Moltres
Landorus-Therian
Corsola-Galar
Darmanitan-Galar
Pawmot
Landorus
Iron Treads
Ceruledge
Blacephalon
Buzzwole
Mamoswine

His Pokemon:
Swampert-Mega
Zoroark-Hisui
Beedrill
Goodra-Hisui
Rotom-Mow
Volcanion
Sneasler
Bewear
Kommo-o
Crobat
Turtonator
Togekiss
Moltres-Galar
Terrakion
Arcanine-Hisui
Aerodactyl
Victini
Jirachi
Pelipper
Enamorus
Decidueye-Hisui
Kleavor
Bisharp
Amoongus
Roaring Moon
Toxapex
Lopunny
Wyrdeer
Cyclizar
Latios
Basculegion
Venusaur
Meowscarada
Greninja
Tapu Lele
Slowbro
Ditto
Mew
Cradily
Samurott-Hisui
Ribombee
Diancie
Grimmsnarl
Muk-Alola
Dragalge
Glimmora
Iron Leaves
Gardevoir
Audino
Tyranitar
Ludicolo
Weezing-Galar
Walking Wake
Staraptor