Is it rude to ask who else is coming to a party?
A few take the position that asking to see the guest list is presumptuous and insulting to the hosting capabilities of the inviter. The common factor among this group is that they all like to host (including surprise guests or last-minute invitations) and all exhibit a high degree of social confidence.
Many more strongly feel, both as hosts and guests, that guest lists should be transparent in aid of alleviating said anxiety or avoiding conflicts with enemies. Even the nicest person I know admits that there are people they don’t want to end up sitting next to at a dinner table. But it’s mostly about anxiety. From moderate social discomfort to full-blown dread, many of us will not enter a room full of people without knowing who is inside.