The category Other should cover most odds and ends, less popular or known areas, and other esoteric topics.
Certainly, those topics that become noticeably popular on CCC will naturally gain their own categories.
However, if you feel there's something specific that deserves its own category now, feel free to suggest it in the comments below.
You could have a category entitled Cryptids BUT there is a catch to this category. There are so many different ones that you may want make sub-categories or put them into individual categories or by state. I personally would do it by state