Alex Lifeson from Rush, of course, which is really what I should call him up front. Titles are hard, sometimes. Rush isn’t really my favorite band any more, but I still have lots of time for them when the occasion arises.
He’s a largely self-taught musician, but managed to innovate in several ways, notably—to me, at least—his preference for creating color and texture in the spaces between his virtuosic, more showy bandmates.
Like Ringo Starr, another sometimes unsung hero of rock music, he always strives to serve the songs first and foremost. I think this is an admirable approach for any artist, striving to do what you think is best for the piece, not trying to show any particular skill.