I second justin sandercoe for breadth of knowledge. His website has something for everybody. Even after 40 years of playing I find stuff on his site.
I hear your pain. I never got really excited about learning a bunch of pop tunes from the 40's and 50's. Who really wants to play Autumn Leaves?
Although not a blues guy one player who really opened my eyes on the guitar is Bill Frisell. Specifically his notions of what to add to the repertoire. He seems to be willing to take many more modern pop/rock/folk/blues tunes and work out jazz arrangements of them.
For example, how many instrumental versions of Dylan's "Masters of War" can you think of?
Listen to the blues greats. Over and over again.
Eventually you will begin to find pieces of their licks on the guitar.
Then you can find your own voice
Remember, even Stevie Ray played Kenny Burrell (Chitlin's Con Carne).
Here's great blues tune by one of the greatest blues/jazz guitar players of all time. Well, maybe its just me.
https://www.youtube.com/watch?v=wQyHxVTXVrM