I don't have much more information than in the title, unfortunately. Maybe a month ago I stumbled across a creator who had a bunch of high poly looking CAS sets, among which I remember were airline uniforms including hats with (I think) Simlish logos or badges. There was also a two-piece martial arts outfit. They may have also had some fantasy themed CAS parts but I could be conflating that with something else. I downloaded the, briefly tried them in my game, but I must have accidentally deleted them from wherever I moved them.

I've scoured my download history on my browser and download manager but I can't find any trace of any of what the files were called or where they came from. It seemed like a site that was updated at least fairly recently. I don't know where I originally found it, I assumed tumblr but browsing all my usual tags hasn't helped either.

Might be CHBoom?

They also have some NSFW stuff so here's some specific ones you mentioned..
Hanro Air Cabin Crew Uniform Sets
Air Simlandia Cabin Crew Uniform Sets
TS3 JUDO
Pan Am Cabin Crew Uniform Sets

Yes! That's the one, thank you. 🩷