Agreed on Persona 5, and I really need to play Persona 4 (it's on my list but stupid life gets in the way).
Two other picks:
The original Lunar: The Silver Star on SegaCD. I never played the remakes on other systems but I know they changed significant parts of the soundtrack in those games, while the SegaCD version just hit perfectly for me.
Final Fantasy Tactics. One of the few soundtrack CDs I imported when those were a thing and could listen to and instantly recall fond memories of playing the game.
Same here! I'd played some Genesis ones like Landstalker and Shining Force but it was Lunar that was the first game I absolutely loved. Working Designs was the shit back in those days.