292 species are weak to Ice, more than to any other type
Each number is how many species the attacking type puts in that list; the type opens the list.
Counts of the 1025 species this site covers, Generations VI to IX, both types combined.
Weak to
Ice finds the most weaknesses, 292
fighting258flying253poison143ground274rock272bug184ghost155steel139fire262water178grass197electric216psychic136ice292dragon67dark146fairy168
No species is weak to Normal.
Resists
Grass is resisted most often, by 448
Immune to
8 types meet an immunity, Ghost the most at 131
No species is immune to Flying, Rock, Bug, Steel, Fire, Water, Grass, Ice, Dark and Fairy.