It's also important to remember that, while the Alolan variants are part of the Alola Pokédex in the main game series, in Pokémon Go these are classified as variant forms and, therefore ...
Morelull, the illuminating Pokémon from Alola, can be found in the wild in Pokémon Go. Yes, Morelull can be shiny in Pokémon Go! Neither of these mushroom Pokémon see any use in raids ...