Viggens and early (or late, if there are any to spare!) models of the aforementioned Grippens would be fantastic, as they were designed to operate in battlefield near-frontline conditions and are quite robust.

Also, literally anything reasonably modern that we have squirreled away at AMARG. And we have a lot.

Edit: not to mention, any relatively modern Mirage model (I don’t think there are any disused Rafales, unfortunately) could be useful. Tornadoes… possible, but questionable, as they’re on the edge of obsolescence… but at the same time they do have the virtue of being available (and I’d think they’d probably be as good or better than an old Su-24).

Edit 2: also when are we gonna give them a few dozen AIM-174B’s