It’s interesting to see how PFF ranked all 3 of them:
Barnes +0.8 (tied with Mangold for 21st out of 78)
Jones -4.6 (ranked 98th out of 115)
Rhaney -5.3 (ranked 101st out of 115)
(BTW as I always say, I see PFF rankings as more or less right. You can quibble about details but I never see anyone ranked wildly wrong just based on what I see when I watch the player.) Barnes btw ranked higher than Pouncey, Kalil, Hudson, Linsley, Montgomery, Sendlein, Mack, Sullivan, and Lichtensteiger. I don’t expect him to stay ranked higher than all of those, but in any event, it showed well.