For fans and media, the focus is mostly on the head coach and the coordinators. It is hard enough to understand all the different responsibilities that those positions have in order to analyze, evaluate and give blame or credit. It is almost impossible, from the outside looking in, to do that for the coaches below those levels.
For the Cleveland Browns, OL coach Bill Callahan is one of the few position coaches that has gotten a lot of credit. Not just for his time in Cleveland but for most of his time in the league.
Now, at a national level, RB coach Stump Mitchell gets the credit he deserves for the work he has done with running backs over the years.