All ik is that for Michigan, completion date matters quite a bit, from the info they’ve released pubicly. With one week left of possible interviews and the possibility of getting rejected by a tweet (happened last year), I find it quite possible that they have a list of people that they’re actively considering, whereas the people they’re not considering/prioritizing may be rejected later via tweet or after the fact.
All of this is speculative, so don’t lose hope! I just feel that as a UM grad, I would have heard something by now.