>>96060332 (OP)The improbability of this coming about naturally means that they are the product of DAoT genetic manipulation. Clearly, this was someone attempting to make designer waifus and husbandos. As such, I believe that both anime style catgirls and furries exist, as well as a spectrum inbetween due to both variants blending together naturally since the project fell through with the Age of Strife and so the original producer can cover their bases.
Thus,
>>96061471 is reconciled as well as why they were initially accepted as abhumans (some do look pretty close to humans) while also in danger of losing that status (some are quite divergent).
Additionally, I expect that while there may be cutsey elements leftover from the anime strains, the general danger of the 40k galaxy and dangers of the Age of Strife pushed the Felinids as a whole to draw closer to a Big Game Hunter mindset. Cats are, after all, the most dangerous predator species on Earth. Make them smart enough to be able to use a gun and they will want to fight a T-Rex.
Oh, and before someone asks where the other worlds in such an experiment are...there are no wolves on Fenris.