I was going to correct you but you’re actually right. The term for this is a Euler diagram. I think they’re more useful.

I’m pretty sure “intentionally over complicating things for entertainment” overlaps significantly with most forms of “Non-monogamy”, and with “the human experience”. ;-) The pertinent question is, which of these rectangles/ explanatory examples fits for a given person, and which one’s don’t? I believe this diagram was developed to help us understand where we fit in the poly-schema we’ve developed.