Coaches
Head coaching tree
Coaches assistants who later became FBS head coaches and then theirs and so on and so on.
Conference
Team
Gary Barnett · Northwestern 1992-98, Colorado 1999-05
68 FBS head coaches in his tree, up to six generations. Coaching data from Wikipedia.
Show68 head coaches · confirmed by a second source · Wikipedia only · ▌current Power 4 head coach · ▌current FBS head coach · + ranked
His full career and every staff link: his coach page.