Skiffle - has there been a skiffle band in the last 30 years? Who?
Merseybeat - Hmmm, would have to think about that, the Monkees? (bad joke I know)
Gabber - Well if you include hardcore drum and bass with Gabber then you can say LTJ Bukem who would be somewhere between the two.
New age - Fletchers did do this with the "band" that went with Bardo Pond Fursaxa I think her name was.
Kraut Rock - Mouse on Mars would work here I would guess. Gary Neuman came a couple times too.