Yeah; I've read somewhere that many of the Funk Brothers considered themselves Jazz players.
Ginger Baker's roots were definitely in Jazz:
“Four drummers in my life who were my absolute heroes: Phil Seamen was the first one, Max Roach, Art Blakey and Elvin Jones. All four of them became my friends, and I mean dear friends. That is worth more to me than anything in the whole world,” he said once"
And, of course, he recorded Jazz albums, including the excellent "Coward of the County" featuring compositions by trumpeter Ron Miles.