Persona Three is also my favourite, particularly FES. Best combination of Story + Theme + Mechanics. I was obsessed with it The time limited life sim aspects tying into the "everyone dies, use your time wisely) thematics, isolation from your party members (how they don't follow your every command) I don't think 4 or 5 really managed to mingle their game mechanics with their themes in the same way 3 does, even social link wise there are more interesting stories in 3. I think probably because they're just bolting 3's structure onto a new plot and enivronment. I was particularly disappointed with the half assed "rebellion" theming in p5.
But also like, maybe I should give Persona 4 another fair crack. I haven't played Royal yet so hopefully that comes to pc too.