Don't know why it didn't include QBs and WRs but the article was slanted to OL. Guys who became consistent starters:
Historically over all NFL history, 83% of OL, 70% of LBs, 67% of TEs, and 58% of RBs and DL meet this criteria. I thought RBs drafted in the 1st would become automatic starters.
From 2013 through 2017, the success rates were 59% for OTs, 50% for Gs, and 68% for Cs. Not sure of the disparity in the IOL positions.