Nightcore, some Dupstep, Symphonic Metal, Pop Rock, Synth Rock, Hip Hop, Rap, Pop, New Age, and Experimental.
Pop Rock actually is a rather large genre, it just doesn't have a whole lot of very popular bands. Like, Paramore, and Weezer have both done some Pop Rock, for example. Less known bands would be more like Ludo, or Freelance Whales.
Jazz, Blues, Blues Rock, Swing, 'Classic Rock' (real Rock & Roll), Punk, Punk Rock, Soundtrack, Classical, Bluegrass, Alternative, Art Rock, or Folk?