bold = their whole line is that type
Grass: (any of the starters, Vileplume, Bellossom, VIctreebel, Jumpluff, Ludicolo, Shiftry, Roserade, Leavanny, Tsareena)
Fire: (any of the starters, Magmortar, Chandelure, Talonflame)
Water: (any of the starters, Poliwrath, Politoed, Kingdra, Azumarill...