Gallant or Berube, but both of those guys will probably have jobs if/when Adams ever decides to move on from Granato.
Hell, I'd say take a good look at the Oilers former coach, Jay Woodcroft. Yes, they were awful out of the gate this year, because they tried to implement a new defensive system that totally blew up in their faces, but before that Woodcraft turned them around when he was hired in February 2022, went 76-32-12, and won 3 playoff series, including taking them to the conference finals the year he inherited a near .500 team in February. The Oilers are my "second" team, Woodcroft is a good coach.