Joe Ely.

Albert King.

Texas Troubadours.
You tell me.

Stevie Ray Vaughn. (RIP)
Jimmy LaFave (he's more Okie but was in the Austin scene; more
country/Dylan than blues, but DAMN fine music)

And for the best acoustic blues/folk/country:

Guy Clark.
Butch Hancock.
Townes Van Zant (RIP).