This TES mod seems to add a Catgirl companions and AINMHI race, perhaps a few more things. More details and requirements to be in the readme.
Accomplish this Demon Oblivion nude mod adds a demonic companion with which various obscenities leave. More in the readme. Attention respects: on the order of installation 1st Oona’s Outfitters. (Part 1 and 2, Update 1 and 2) 2nd Demon Consort Light (no sex animations) 3rd Demon Consort Mature (with sex animations)