Hm, I guess “Pope Bear” probably isn’t on the table, though the cartoonists and children’s book writers would have a field day with it. Pope Ursus or Ursula? I believe there are saints of those names.
If I had to pick an existing one, I too would be Pope Leo XIV. I have started to develop an admiration for Pope Leo XIII and feel he is a bit of a forgotten Pope when he shouldn’t be.
If I could pick a new one and I couldn’t be Pope Bear, I’d be Pope Michael, and fight evil.