Mutually Exclusive Party Members has these relationships to other tropes:

parents kids shares a parent with:
Player Party
Story Branching
parent child
Player PartyGuest Star Party Member
''Optional Party Member
''Required Party Member
''Manual Leader AI Party
Story BranchingMultiple Endings
''Multiple Game Openings
''Secret Level
''Golden Path
''Story Branch Favoritism
You'll need to Get Known if you want to add or modify these relationships.