Hero groups

Hero groups are specific combinations of heroes when going on a provision. When the hero combination is placed in the right order a message appears with the groups name. I don't know if these combination gives bonuses or not.

Here are some groups that I have discovered (From left to right):

The Lost Band: Vestal, Jester, Leper, Crusader.

The Stalwart: Plague Doctor, Vestal, Bounty Hunter, Crusader.

There's probably some meaning to this, or it's just some easter eggs.