Yoko Shimomura is actually my favorite JRPG composer. She did Kingdom Hearts, Mario RPG/& Luigi, and Radiant Historia before this game.
Her combat music always stands out to me in particular for being emotionally unconventional. Everybody else makes a battle theme and all that’s on their minds to convey is “cool and/or scary that violence is happening, throw in some grandiosity if it’s a big one” but she’ll do stuff like “the enemy is the panicked one here; they’re trying to front like they’re badass but actually I weep for them” or “you are losing a nonverbal rap battle.”
XV actually let me down a bit in that specific regard but the soundtrack as a whole is very solid.
“If weak to fire then cast Fira”. You don’t even need to have your characters learn the weakness first by scanning them, they just intuit every weakness.