Legendary dwellers for quests [Question]

Hi, i’m confused about for what quests i can get legendary dwellers? I’m already know that i can get following dwellers from quests:

Preston Garvey Sarah Lyons Ed The Ghoul TV series pack that includes Lucy, Ghoul, Maximus, Snake oil Salesman and Ma June (maybe i forgot someone) Thee Dog

Is there more LEGENDARY (not rare) dwellers that can be earned this way? Thanks in advance.