It actually makes me happy that all three RBs are listed in the OR depth chart together. I read all of those as "The guys with OR are ALL capable and we plan to depend on them to win starting in game 1." Surely, the 3 vets are more advanced on all the extra-curricular skills, like pass protection and the playbook etc.
On top of that Jeremy Banks definitely passes the eye test in the activities I've watched. Having 3 "#1 guys" is gold. Having what could be a forth learning behind them is solid gold. Excited @ this entire group.