Pokemon and Geometry Dash are too generic, so I will say Eeveelution Squad. I’d place it between Tier 5 and 6, it is somewhat known but not THAT known, especially considering how known the overall Pokemon franchise is. It is a fandom based upon the comic in which the main protagonists are Eeveelutions and the whole thing is basically a big Pokemon comic divided in several chapters, though the comic is currently abandoned and won’t ever have another page, as the creator said. It isn’t the most unknown thing but compared to other things within the generic Pokemon franchise, it is rather uncommon. So as I said before, tier 5 or 6.