Complex sentence: Richbourg followed Nobles'lead in playing artists such as Otis Rush, Muddy Waters, Howlin' Wolf, Sonny Boy Williamson, men who performed what Richbourg later termed "cornfield" blues music.
Split into simpler sentences: Richbourg followed Nobles'lead in playing artists such as Otis Rush, Muddy Waters, Howlin' Wolf, and Sonny Boy Williamson. They were men who performed what Richbourg later termed "cornfield" blues music.