The select crew of 32 NFL coaches is more like a family tree than anything else.

Fans can study a coach’s pedigree by analyzing who he’s worked under, how those coaches have influenced his own schemes and strategy, and ultimately how his successors have fared when they move on to head coaching gigs of their own.

Trying to make a clear picture of this intertwined network of coaches can be more confusing than trying to understand the complex schemes they use on Sundays. It’s a rabbit hole where one coach leads to another, and to another, and by the end it can be difficult to make sense of who’s really connected to whom.

So the Wall Street Journal presents the official NFL coaching tree, detailing the sprawling web of head coaching relationships. Clicking on a coach will highlight every coach he worked under, until his first head coaching gig, and any coaches that worked for him and went on to become a head coach themselves, dating back to 1960.

Note: Once someone becomes a head coach for the first time, anybody they subsequently work under as an assistant is ignored. The purpose of this is to understand who influenced these coaches and how they got their start in the league. Connections from other leagues, such as college and the CFL, are excluded