For every alphabet (A to Z), there exists at most one corresponding Simple Pokémon™. As of Generation 8, It goes: Ariados Blaziken Charmeleon Diggersby Ekans Farfetch'd Groudon Hypno Ivysaur Jellicent Koffing Lapras Metapod Nidoran♀ Oddish Poliwag Qwilfish Rattata Squirtle Tentacruel Umbreon Ven...