Added into the Resources tab. Let me know if you find Found Ghost.

I wish Luster Candy was in Nocturne back then.

Omega+ (Hard+) had zero changes regarding of difficulty, only more loots. It'd be the same as Hard. So it'd be two duplicates categories in different name.

Also I think you're mistaken - Normal is technically "Hard", Hard is "Omega".

I think it deserves a category to run as it'd be fun to run the game in such a chaotic way. It's fun.