Looking at this through the eyes of a coach who is in-demand, and with the caveat that even the best of these openings is just ok:
Bears: You’d have to believe Fields is good, and I don’t. You’ll use up your three years before you get another QB who can win.
Broncos: Tough division and an impatient front office — Elway might be the worst boss in the league. Only tempting because of the possibility they land Rodgers or Wilson.
Dolphins: One of a few options that might be good if you have say on personnel, or at least who the GM is. Hard pass if Ross is as committed to Grier as he appears to be.
Giants: Mara has moved on quickly from two coaches in a row, but they both richly earned it; over time, he has been patient. If you have input on personnel and can sell Mara on the need for a root-and-branch rebuild, this isn’t a terrible gig. Obviously, those are two big ifs.
Jaguars: If you come out of the negotiation either with full control or a GM who you like in place, this is the best opening by far. And I think the right coach gets those things. I don’t believe for a second that Khan is actually committed to Baalke beyond an immediate transition period.
Raiders: They overachieved this year; you’d have to assess in the interview whether Davis recognizes this and is willing to let you undertake a broader overhaul than a playoff team typically does. Tough division. I do think Davis would be one of the better owners to coach under — good combination of knowledge of the game and a modicum of patience.
Vikings: This one is a trap. For my money Zimmer is the best coach who got sacked this week. You’d probably be luckier in one-score games, but achieving real improvements in the near term would be very hard. And Zimmer’s firing suggests there would be little patience for any struggles.
I voted Jaguars because I think the right coach gets control and has a patient owner, a potential franchise QB, and lots of flexibility. If you assume you have to live with the personnel guy currently in place, or someone chosen by ownership with minimal input from you, I’d choose the Raiders (but that job might not actually be available).