Try out Corey Stevens. He used to do a SRV tribute, but is very good in his own right. Los Lonely Boys, Indigenous, Doyle Bramhall Senior. Senior is who Stevie learned to sing from. I like Smokin' Joe Kubek a lot for the Texas style blues. Also one of my favorite blues guy is Tab Benoit. Debbie Davies, Sue Foley for blueschicks, Albert Collins , Freddie King, Albert King, Buddy Guy obviously... Tommy Castro, Coco Montoya, Chuck Alvarez... Shemekia Copeland... Dennis Jones, Jimmie Vaughan (duh!), James Harman, Joe Louis Walker, uh, let's see, Lonnie Brooks, Koko Taylor, Luther Allison, Peter Green, Robert Cray, Robben Ford, Roomful of Blues, Duke Robillard, Kim Wilson, Charley Musselwhite, Fabulous Thunderbirds,... Slim Harpo, Snooky Pryor just off the top of my head.