Larian Studios Forums Divinity: Original Sin 2 Divinity - Original Sin 2 - General Optimal party discussion.

Two mages (one with staff and one with wand and shield)
One fighter (sword and shield)
One Archer.

Is my most recent playthrough.

I am tempted to go with the following as what I would consider optimal.

Two fighters with shields.
Two wand users with shields

You can have a rogue character as the 5th to call in when you need to rob people.

Basically characters without shields are too brittle.