Poor list to say the least but the argument still has a ton of merit. Not only were Donald and Kupp underrated/under recruited, Tyler Higbee went to WKU, Austin Corbett was a zero star recruit who went to Nevada, Havenstein and Edwards were both ranked in the 600’s yet did what most Wisconsin OL do, make it to the league.
On defense Troy Reeder went to Deleware, Ernest Jones was ranked in the 900’s even though he went to South Carolina, Darius Williams went to UAB.
I haven’t gone through the Bengals starters but just from the rams it shows evaluations matter just as much as grabbing a high ratio of 4/5 stars. Wisconsin for instance has maybe a dozen OL in the league and most were 3 star in high school.