Gen I: Starter trio and their respective evolution forms, Chansey, Staryu line, Oddish line, Abra line
Gen II: Starter trio and their respective evolution forms, Togepi line, Espeon and Umbreon
Gen III: Starter trio and their respective evolution forms, Weather trio, Bagon line, Beldum line, Lotad line, Azurill line, Ralts line
Gen IV: Piplup line, Chimchar line, Budew line. Elekid line, Magby line, Gible line, Togekiss, Yanmega
Gen V: Oshawott line, Snivy line, Cottonee line, Petilil line, Deino line, Solosis line,
Gen VI: Sylveon, Fennekin line, Froakie line, Goomy
Actually all Water-types and I think I've missed a lot.