Team ups of hero teams under the same IP are popular.
Into the Spider-Verse with the Spider Team of parallel universe variants
The BatFam has several team-ups and crossovers in the comics and animated media.
(Include Luke Fox, Kate Kane, Selina Kyle and Stephanie Brown)
Superman is due for his own mainstream team-up crossover.
From the comics and animated media, the only multi-Superman stories I can think of are Death of Superman (with Steel, Supergirl, Superboy, Eradicator and Clark) and Superman Beyond (with Clark, Ultraman, Shazam Earth 5, Captain Atom Earth 4 and Overman.
With the Kryptonians all having the same stock abilities, I figured you could play around with the roster and use other analogues who exist in Superman's lane. So there is a diversity of powers and abilities.
My own list would look like:
Superman
Shazam
Power Girl
Buddy Blank OMAC
Orion
Maxima or Barda
Feel free to make your own lists.