Most if the types in the game seem have a consistent strategy for battling.
Eg. Grass: Statuses, Out heal and drain the opponent, only attack when the sun's got your back.
Dark: Play dirty. Use your opponent's strength against them or kick them when they're down.
Dragon: Full steam ahead. Who cares about move effects, we have much higher stats.

What are other type strategies that your head cannons have put together?