LDS: wholesome fun, hearkens back to quainter times, family-oriented, rated G. Easy vacation place for families with lots of kids or as a gathering place for large extended families. LDS love nostalgia.
LGBT: appreciation of art/aesthetics/storytelling. Disney parks encourage unique expression and getting decked out. Good place for groups of people to bond over shared fanhood.
Cynical view: Disney parks are loved by people who haven’t found joy in adulthood, so they fall back into childhood hobbies. You might find these people across all groups.