For the video, keep in mind that for some reason it's distorted in that it seems to slow down, and not be in realtime.
In a 14-7 game, I'd have a flag for a late hit but he was also IMO making a genuine effort to get to the QB and O-Line needs to do its job here.
I don't have a UNS on anyone except B54 (taunting), assuming A said something to warrant a UNS... but I'm not going to fault him for defending him teammate in this situation.