I'm not sure what you mean, because to me, Yes, Genesis and King Crimson are not progressive rock bands. It's even sort of questionable if the later iterations of Genesis were a rock band at all ... they were more like pop.
As for myself, I'd nominate The Pixies. Or, if you're lookiing for something of more recent vintage, The Flaming Lips.
EARLY Yes.....EARLY Genesis.......EARLY King Crimson were defintly rated Prog Rock.