Ok Atmosphere, Heiruspecs, and Brother Ali, and Mac Lethal
I don't have links atm. Its all 'light' rap. Midwest rap is way different than East/West coast. Although I like that stuff too.
I could list more, I just recently went to a 9 hour concert of local rap bands, was pretty sweet.
http://www.myspace.com/atmosphere
http://www.myspace.com/heiruspecs
Atmosphere is by far the most popular rap band in MN, heiruspecs is probably second most popular.