But roach drops are my thing. :\
Air - Cloaky (Small Teams): Absolutely wreck your face if no air.
Air - Rover (Small Teams, Big maps): Moar wrecking your face.
Tanks - Gunships: For old goliath drop. Now likely defunct.
Gunships - Ships: Classic shaman drop that few people expect. Almost exclusive.
Gunships - Amph: The preferred shaman drop that almost everyone knows and fears.
Cloaky - Tank: Defunct one-two punch. Used to be used to spam scythes then spam goliaths.
Hovers - Spiders: Theoretical Cancer
Jumpjet - Hovers: Theoretical cancer