Wild Success = 2 Pro Bowls, 7 years as a starter, or 125 games played.
Data is from 1988 onward (7 round format), BUT data is obviously skewed because I classified undrafted as 7th rounders and obviously if a player is undrafted and is not successful at all, but played a bit, he won’t be on the list, so 7th rounders are sometimes 2x as successful as 6th rounder because of this.
It looks as though BOTH O-Line and D-Line have a significant amount of undrafted successes. Running backs as well.
I classified DT and DE both as D-Line since many guys (Cory Redding) were drafted as one and ended up at another. Same goes for D-back because of guys like Nnamdi, Antrel Rolle, maybe Malcolm Jenkins, etc.