As suggested by Adam, about a million pages back in this thread......here goes (ignoring the obvious like Hendrix/ The Who/ Led Zep, etc.) and in no particular order:
Blind Willie McTell
Mississippi John Hurt
John Lee Hooker
Rory Gallagher
Martin Simpson
Duke Ellington
Miles Davis
Willie Nelson
Michael Hedges
John Martyn
Ry Cooder
Jon Strong (what do you mean you've never heard of him!)
And.....TOM WAITS...........
I'm still working on my own masterpiece. It mixes the chordal complexity of Status Quo with the intelligent lyrics of Marc Bolan and the classical melodic sensibility of Sid Vicious, made perfect by being performed with the boyish good looks of Keef Richards.
And my poker skills are even worse