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 Generation 4 - New Wave 1 creatures and evolutions | Shacknews
gen1 - pokemon gen 1-7
Pokemon Generation 1 tier list by Fluttershyfan18 on DeviantArt
All Pokemon Belonging to Generation 1
Pokémon Go - Gen 1 Pokémon list: Every Pokémon from Red, Blue, Green and Yellow's Kanto region | Eurogamer.net