I am not following the league so cannot give you any sleeper names from other organizations.
However, I can offer you three familiar names I would target for the bullpen for 2026:
1. Simeon Woods Richardson. As you said, starters pitching into the late innings will be important in 2026. Woods Richardson has demonstrated that he cannot do that. My carrot and stick for Sim would be, go back down to the minors for most of the season to show us you can consistently pitch 7 innings, or, stay in the majors with the big club and make yourself into a good relief pitcher. Pitchers often balk at being moved out of the rotation (pun intended), but in most cases pitchers will prefer to stay in the majors.
2. Connor Prielipp. As others have said, injuries have hurt his chances to be a starter. Invite him to spring training with the understanding he will be in the bullpen going forward. And then, tell him to let it rip. Whatever his best two pitches are. Let’s see what happens. He has options if needed.
3. Griffin Jax. Yes, Jax. He has been awful in Tampa Bay and I would not be surprised if he is absolutely miserable there and that it shows. No team wants a guy like that around. I don’t think Tampa Bay would just give him back for nothing, but another trade should be possible. I like his chances to recapture his success here in a familiar place.
I’m sure you know that the Pohlads do not micromanage roster decisions. Whatever. We can all be optimistic in our own way that big meaningful changes will happen this offseason.