Couldn't find an infographic with all of the costume/event Pokémon so I made one : r/TheSilphRoad
Pokémon Go event Pokémon list: All costume Pokémon, including party hat Pokémon, flower crown Pokémon and every Pikachu costume explained | Eurogamer.net
Pokémon Red And Blue Pokémon Ultra Sun And Ultra Moon Pokédex Pokémon Vrste PNG, Clipart, Azurite,