WR - I don't think Butler-Jenkins will leave. He's seen quite a bit of playing time, no? I know that tapered off toward the end of the year, but he could be dealing with any injury or something. None of the other guys, of the ones you mentioned, leaving would surprise me. Although it would be a shame to not watch Michael Smith catch his annual bomb in the Spring Game this year.
DL - Eh, not sure if I would rule Palmer out just yet. Wouldn't Mimes be in the same boat (2018 recruits who haven't really played much)? I guess they could go either way, but I would expect them back.
LB - I could see Tucker leaving. As others have said, Nunn plays quite a bit on special teams (I didn't realize he could be moving to TE, if in fact that is true). We're losing at least three guys, so I think guys will wait at least until Spring to see how the positions are shaking out. I suspect the starters will be Bright, Pine, and Campbell. Seems like Sirvocea Davis and Leslie Smith may have surpassed Wendell Davis, but I'm not sure which positions those three will end up at.
DB - Tallandier is way too young to give up on (Paris Ford, anybody?). At least one of Garner and/or Coleman will probably need to fill that Stocker role at safety. I could see the other moving on, I guess. And I realize some of these guys are shuffling around a bit between CB and S.
All of this said, you just never know. Jester Weah didn't show up until his senior year. Dintino and Herndon sort of came out of nowhere to have pretty god senior campaigns, also. Shoot, look at a guy like Anthony McKee... it seemed like the staff was genuinely disappointed to see him go (if I read them right), and he hadn't done much of anything in the four (or whatever it was) years he was here. Statistically, I think only about half of every class finishes their eligibility with the team that recruiting them, so we'll undoubtedly see some guys moving on. I just don't know if it's always as easy to identify as it may appear to us fans. Often times, yes. But we don't see these guys practice every day, and I think we might be surprised in some cases.