PFF grades are about right. DL is elite, and Roche is phenomenal. OL is ok, but run blocking is horrible. Hopefully, run blocking improves as the season moves along. King also needs to improve his read option on RPOs.
Mallory is an elite receiving TE and deserved more targets, but he has never been a good blocker and that hurts his overall PFF grade. Ford usually grades better than he looks because he is there to get attention of the OL, so the other players on defense can stop the run. The other DTs, with the exception of maybe Miller, have different roles. I am sure Stroud, Baker and Diaz appreciate him