It’s true some fights can get exhausting but if you look at what loops do the most damage (not entirely accurate but for example, generally):
Nero: revved Exceed, certain breakers and R2 grapples, constantly charging Blue Rose shots while you hack and slash
Dante: same frequent charge shots with E&I, Swordmaster specials, summoned swords, double Kalina Ann (gotta find the second)
You can make quicker work of some enemy types.
V I don’t know the names so well but Shadow’s triple slash and the other air juggle, spin dash move, Griffon’s lightning v’s, and of course Nightmare spamming the horizontal and then vertical lasers