Skip James. This is motherfucking Barbecue Bob, motherfuckers, and he too is a guitar freak. Chords are practically eliminated on many of these recordings, and we are instead treated with BBQ's slide trickery. Check out Mississippi Blues, where he mostly follows the vocal melody before concluding the phrase with his trademark VI V VI I (also prevalent in Chocolate to the Bone that reappears in Jacksonville Blues).
I love the idea of having a catchphrase-style lick: Michael Jackson's "hee hee hee", Unleashed's first bar of all of their mosh parts. What a cool thing - if you can think of more share that shit in the comments.
Atlanta Moan is another great example of this tangy bastard following his voice with his guitar and inserting sparse chording as a driving backbeat - then jumping quickly into leads to transition from chord to chord in the 12 bar structure. Super secret family recipe lookin-ass.