Probably not Monster
Having watched many of the top rated anime in this list, it's a bit hard to take seriously, especially given how low Evangelion's position is.
This is great; I over a decade ago I did something similar with the books in the Dresden Files, but my sample wasn't very good.
There's got to be interesting psychological information to be had from this kind of process. I would have guessed that a person's loading on the first factor of any list of paintings/movies/anime/whatever is reasonably indicative of their IQ, since smarter people are more accurate about things in general. But then Gwern has a fairly low score there, so IDK.
Monster is objectively #1, so you could use that to do further corrections.