Then again, every cat owner thinks their cat is the special one.
The one that had had experiences outdoors was more obsessed with food (to the point of eating everything fast until vomiting sometimes), scared of noises and sudden movements (going to hide in safe places), even from the people that had been living with her and caring for her for years. She was sweet and loving, but the streets never left her.
The one that had always been indoor was friendly to everybody, never super scared of noises, super curious, could regulate food properly (eating piecemeal throughout the day), etc.
There's always differences between cats' personalities, and this is a small sample, but it seemed significant and made sense given their experiences and possible past trauma.
In actuality he's been through some really rough times at vet hospitals as a kitten (and that's why he reacts differently with vets), so it is an extra relief that he came out of that so well-adjusted at home.
I also find our cats' preferences to mirror ours (even when we're not around), with the added depth of how they fit into cabinets and other small spaces.
I feel as tho our failure to architect for cats properly is more a symptom of laymen approaching architecture.
Aside: on a much larger scale, I've found commercial construction often sucks at this (except at the high end) while haphazard diy builds often naturally incorporate this.
But even people who seem to either study architecture/design/layout or figure it out accidentally leave the cat to its own devices - but everyone knows cats like to be in boxes, so provide various "boxes" for your cat in the design and they'll use them.
There's a book called All Cats Are On The Autism Spectrum, and I was reminded of it while reading this post. (I found myself relating to the description of cat psychology.)