I would say that Mahomes is elite. The other QBs are good, but I wouldn't qualify them as elite. The same goes for Josh Allen.
Are they good quarterbacks? Of course they are. And they are all at the top of the pack in the NFL.
I think that you and I simply have a different definition of what elite means.
Let me ask you this: do you think that Jalen Hurts, could make back to back throws in the face of pressure the way that Matt Stafford did against the Tampa Bay Buccaneers in the NFC Playoffs almost 3 years ago?
I'm not sure that he could.
Or take away all but one of his WRs and ask him to lead a game winning drive in the Super Bowl against a good defense throwing to basically one guy.
Could he do it? I don't know. Mahomes might be able to; I don't think for a minute that Dak Prescott could (and I like Dak).
Joe Montana was elite; Tom Brady was elite.
In my opinion, elite also connotes rareness or scarcity of quality. By that definition alone, it would not be likely that there would be 7 or 8 of those guys running around at the same down.
Again, all of those QBs you mentioned are the top tier of their position.
I think that Matt Stafford is elite, and that Joe Burrow is very close to elite. At times, it also looks like Lamar Jackson could be getting there, but I don't know if he has the arm talent that Stafford does.