Really, there can be overlap with almost any of them if you want. It's not a perfect system. Fortunately, it isn't being used for any official or academic purpose, so I don't see that as a huge problem.
They are all still finishes even if they're achieved differently. The fact that they aren't necessarily mutually exclusive doesn't prevent someone from having a favorite. The purpose is just fun and discussion. If you want to comment that you voted tsuchime, but you really only want that for a half-inch strip in the middle of the face, above which you want the KU in tact and below which you want a mirror polish, I have no idea where you'll find that, but more power to you. I wouldn't overthink it.