I thought it would be a good idea so more people are encouraged to play Open% with all the changes happened recently. So here is a link to all the backer hero's https://darkestdungeon.gamepedia.com/Backer_heroes And here are a link to all the Trinket's you can summon in https://darkestdungeon.gamepedia.com/Backer_trinkets

Most the current Hero's summoned in are Graverobbers. Anyone else who knows far more about the summon's category feel free to update me so I can improve this guide!