I have two, one who prefers to hunt and eat rabbits and rarely likes a food I buy. but every so often he will like one and so I buy loads of it then next week he turns his nose up. So the other unfussy cat now has 45 years supply of various food and I'm still trying to find a food that will save the bunnies. He did love one, Felix with cheese never turned his nose up at that and now it's impossible to find.So agree with you. I have 1 now getting very fussy with food. We have 1 adopted 1 just comes in eats and sleeps all day, then a few others that turn up. They are getting fussy too, cheeky buggers.
Other than that he is a lovable old rogue who vanishes every spring for days sometimes weeks then strolls in like nothing is wrong wanting some love and sleeps with his head in my hand.
The other will eat any old shite and yet is a pain in every other way. You know how every cat you ever had, has one thing that drives you bonkers. She has every single one of those annoying habits.