What’s the best Mandalorian team?

Depends on the team you're facing, but once you leave out Maul, Imperial SuperCommando, Gar Saxon, and The Mandalorian (who can't access his ult except under a BH lead and is better with Green anyway), you're down to only 6 characters, so there's only one more to leave out.

If you need Armorer for SEE, you're done, you've got your five (BKK, Jango, BAM, Candy, Sabine Wren). But if not, then keep Armorer with Bo Katan, BAM, Jango and Canderous Ordo. Sabine can go ... wherever.

"Crosshair;d-262411" wrote:
Title pretty much says it all. I can’t unlock Maul though, because I’m relatively new to the game.

You can’t build a competitive mandalorian team without Maul.

Your best course of action is probably:
1) farm something else until Maul is a few months away
2) come back and necro your thread to get a proper answer, because you never know which new units might come to the game and change things