Mackintosh, rubberised cloth
Waxed jacket (e.g. made in UK by Barbour and Burberry)
Anorak, derived from traditional Inuit designs
Cagoule, also Cagoul, Kagoule, Kagool
Driza-Bone, Australian oiled cotton
The Sou'wester is what I typically think of as the classic rain coat. Did you know according to Wiki...
"Oilskin jacket (sou'wester) and sou'wester hat.
A waterproof hat whose brim is longer in back than in front.
A long raincoat, often worn at sea.
Sou'westers were originally of oilcloth but may also be made of rubberized fabric or vinyl bonded to fabric."
-- Sent from my Palm Prē