Folder(s) for Non-Canon Species?

Sans the “other/???” folder recently added, it looks as though most, if not all of the folders are for species that have representation in the Splatoon canon. “Other/???” also looks to be mostly for miscellaneous characters who don’t have an explicit, singular species listed.

For my case, I am interested in eventually putting a few manta ray characters into this world. I am wondering how that will be gone about, though- would it be more along the lines of a general “fan species” folder, or would individual, requested species each have their own folder? Or should I just request my rays to be in “Various Fish” for the time being?

Thanks!