Most of them are people I wouldn't want to travel with normally (except Laezel. Tell me how stupid I ammmm yesssd). But when the situation is dire you take what you can get. Laezel specifically seems like very reasonable to keep since the mind flayers are her mortal enemies

Larian's Biggest Oversight, what to do about it, and My personal review of BG3 EA
"74.85% of you stood with the Tieflings, and 25.15% of you sided with Minthara. Good outweighs evil, it seems."