So I'm a metal guy at heart. Despite that, I have a wide range in music, and I want to broaden my horizons. Does anyone recommend any Old-New School Blues artists.

I already know an obvious one, Muddy Waters, but does anyone else have any?
Old School: Son House, Robert Johnson, Howlin' Wolf, Albert King, BB King, John Lee Hooker are just some of my favorites.

New(er) School: Stevie Ray Vaughn, Eric Clapton, Sonny Landreth, Johnny Winter.

Then you have the bands that did blues-based rock (and some straight up blues too)like Led Zeppelin, the Yardbirds, the Animals, Cream, Jimi Hendrix Experience just to name a few off the top of my head.
Thanks guys. I knew the Blues-based Rock ones already but I do thoroughly enjoy their music. I'll be sure to check them out.