Unless you have seen Muddy Waters play , which I have, there is nobody, and I mean nobody, who can convey the blues on electric guitar better except and this is a big maybe is BB King. Now if you want to consider acoustic guitar, then maybe Robert Johnson. I saw in the late 60s,
Peter Green, Eric Clapton, Jimmy Page, Jimmy Hendrix, and
Jeff Beck, and although these guys could wail up a storm,
personally I think Eric tried the hardest to emulate a truly blues style. His take on Chester Burnett's(Howlin' Wolf) Smokestack Lightning with the Yardbirds was the best of the derivative blues style. And of course his take on Willie Dixon's Spoonful was masterful and obviously he took Robert Johnson's Crossroad Blues and made it his own.