Not sure what the questions here is. Title says music suggestions, you asked what artists I like, and you said what artists your found from AS bumps.
Well some musicians I like would be Radiohead, Muse, Gorillaz, Cage The Elephant, etc., but I've been trying to get into more music from bumps lately. Nightmares On Wax and Psyche origami mostly. I'm actually listening to Flying Lotus right now though. Also J Dilla (AKA Jay Dee). While his music is simple and short, a lot of it was in the bumps that would show around the time I started watching AS every night.
I haven't downloaded any bumps as of now, though there are definitely some I want. I'd have to get a Zune (Yes, a Zune, not an iPod!) with more space and figure out how to even get them onto it.