Choosing PoE 2 classes for a party of 4

Hey folks,

We are a group of 4 players counting days left to Dec 6th. With 6 classes (12 ascended) available at EA, what's the best combination to play in a party?

I believe having a sword+shield warrior (titan asc.) is a no-brainer. How would you build the rest of the group? We were thinking to get a witch and witchunter just for fun, but I'm curious if there's better classes' synergy available?

Our aRPG background - little to 0 experience with PoE 1, we've enjoyed D4 campaign but dropped the game right after, same with Last Epoch.

Thanks in advance for any recommendations!