From a long article about minorities getting the opportunity to coach:
According to the NFL’s 2020 diversity report, nine of the league’s 32 head coaches in 2019-2020 were either the son or father of a current or former NFL head coach, coordinator, or position coach. Meanwhile, 63 of the league’s coaches were related to each other either biologically or through marriage—and 53 of those related coaches were White.
[]the University of Central Florida professor who authored the report, wrote that the league has “a systemic problem” that is “talked about less than racism yet is just as detrimental to equity and inclusion: cronyism.”