It doesnt seem like it but i wanted to make sure just to specify because it isnt in the rules.

Are you allowed to Play ANY difficulty? Including new game+ or just FN through Ult?

Thanks

The leaderboards are split by category. Any category with "NG" is "New Game" and any category with "NG+" is New Game+. So, yes, you can play NG+, but specifically for the NG+ categories.

It doesn’t really appear visually that well, but from what I’m seeing, it sounds like Any Difficulty would be Friendly Neighborhood-Spectacular, and Ultimate would be... you know.

There is no real difference in any category apart from ultimate so that is why we keep track of ultimate separately while the rest is bunched together.

I mean you're free to submit ultimate to any difficulty but the mod will just change it to the correct category.