Even assuming Diamond is Blue, it looks like the best OL class may be Stanford's.
Barry Sanders Jr has a 5-star OT, 5-star OG, 4-star C, OT, and OG to run behind for the next 3-4 years. And two 3-stars for depth.
I assumed with Harbough leaving Palo Alto that Sttanford would finish this season with a great record, say bye to Luck and the dominant O-Line, and then slip back to being fodder for USC and Oregon.
Looks like they are merely reloading.