What celebrity has totally out-famed their peers?

I'm trying to think of a field that has the biggest disparity in fame between its most famous participant and the second most famous. The one that comes to mind is skateboarding. Tony Hawk is a household name (decades after his career), and I can't even name another skater, even in an "oh yeah, that guy" sense.

Maybe in the fields of "Instructional Painter" and "Pilots Who Have Successfully Crash Landed", Bob Ross and Sully respectively are at that level. Are there any others?