I've not played any Disgaea games, but from hearing bits and pieces about the 5th one on Switch it sounds like that could arguably be in the cheat-against-CPU camp too? The game has a shop which outright sells cheats such as experience point modifiers, and you can nerf the enemies' levels.
Additionally, since you can enter every item and boost its stats by beating levels contained within them, you could theoretically gain huge advantages over opponents. Other methods, like stacking your units on top of each other, aren't really cheating either but it sure would look silly if you built a tower of archers like that in Fire Emblem.
I dunno, I guess the games are ultimately designed with this in mind, but they definitely seem to encourage players to try and break the game a bit, with their endless stat-maxing potential.