What Pokemon do the Gym Leaders have in Pokemon Sun and Moon?

In Pokémon Sun and Moon, each Gym Leader is replaced by Island Kahunas and Trial Captains. Notable Kahunas include Hala, who uses Fighting-type Pokémon, and Nanu, who specializes in Dark-types. Trial Captains like Lana utilize Water-type Pokémon, and Mallow focuses on Grass-types. Each trial culminates in a battle against the Totem Pokémon, which are powerful versions of regular Pokémon that represent the island's theme.