i cant believe i missed an argument about Cocteau Twins one of my favorite bands ever. They're certainly not goth, they are dream pop, its not just some madeup genre. they were basically the pioneers in dream pop, they led the first wave. they influenced everyone from the cranberries, to lush, to asobi seksu. they have a few elements of shoegaze, but shoegaze and dream pop are pretty interchangable a lot anyway.
I really dont think I can pick just 2
Male: Robert Smith, Ian (blah blah fight if you want), Peter Murphy (Non goth: David Gahan and my beloved Trent )
Female: Siouxsie, and the ladies from Switchblade Symphony