Captain or Loremaster are the support classes with an edge to Captains in my opinion. Loremaster bring CC to the table which can be problematic in a multibox.

Champions make an interesting alternative to Hunters. They are a plate class so they have better survivability and they excel at AoE damage. They can also spec to be an off tank if needed.

1 Guardian 1 Minstrel 3 Champions and 1 Captain would be a pretty fierce crew.

1 Guardian 1 Minstrel 3 Hunters and 1 Loremaster would also be good. A secondary benefit of this team is it is 1 melee and 5 ranged