Locksmith is out of Richmond. Dude would lyrically eat up pretty much anyone in the Bay. As far as mainstream success, Master P and Silk used to rep it in the early No Limit days. Frontline made some noise in the "New Bay" era prior to the Hyphy movement.
one thing is, the richmond scene is heavily tied to the streets. many scenes are, but many times it's the ceo and hood holding the rapper down in other places. lot of richmond rappers really be front line soldiers and not 'hood reporters'
so they get caught up more, get killed more and don't have time to really build something