This is a list of all Pokémon that are not available within any of the Generation 7 titles. If you want to use any of them, you'll need to transfer or trade. :
Pokemon Go Gen 1 Master List | Pokemon names, List of pokemon, Pokemon pokedex
Pokémon Generations - Wikipedia
The Best Pokemon From Generation 1 - GameSpot
List of Pokémon (sprites gallery) | Pokémon Database
Favorite Pokemon list | Pokémon Amino
Pokemon gen 2 master list | Pokemon go, Pokemon, Cute pokemon wallpaper