That fourth thing is hunger. It only comes when the cat is fed on a schedule, as opposed to free-fed with multiple piles of food out all day. Feed in a schedule and you'll suddenly see (healthy, right-weight) interested felines licking empty bowls.
You'll also never sleep in again. That worked for me though. That little asshole kept me from being late to work on many occasions when I forgot to charge my phone.
Lol. 😂 I hear you.
I feed at 10am and 10pm (with a 90 minute variance to keep them from getting to good at timekeeping). After almost a decade, I figured out a way to sleep in! Course, they still whine at night starting at 8pm sometimes, but my vet says my cats are unusually fit and a good weight, so I know I'm not starving them like they want me to believe. Their chirps and whines have gotten more and more elaborate and detailed on the last three years.
Yeah, I had to leave for work at 6 during the week so that was when he got fed. If I wasn't awake by 5:30 He was on my chest licking/biting my face. I could have set my clock by it. He had a crazy sense of time.