From your list, it would easily be harem for me. Variety is the spice of life, and instead of being stuck with one LI that I can barely tolerate for the duration of this game, I can kick her to the curb and date the pleasant, down to earth sweetheart instead. Now, speaking on that, the only tag/genre that would exceed harem for me in general would be choices matter (even though this still doesn't have a tag per say on this website).