I think Paddack and Ryan are going to continue and emerge as a true 1-2 punch.
I see Gray as an effective, yet injury-prone arm that might contribute somewhat but we probably shouldn't count on too much. Ober's injury really knocked him down on my list as well, he was looking solid prior but I think he may have already reached his ceiling in terms of what he can give the Twins.
I see Winder as a wildcard, certainly could play a big role this year if either of the two aforementioned get injured, or....when Bundy and Archer hit the wall, which I anticipate will be around mid-June. In fact I think that it's possible that one of those two might not even be with the team come July 15.