Been jonesing for a similar style of tactical RPG. Tried out some Disgaea demos, but the anime cringe and the sheer amount of shit on the stats screens turned me off.
I liked the focus on class/character building in those games. Been thinking about XCOM and Fire Emblem games, but I figure I'd fish for recs.
XCOM 1 with the Long War mod is the greatest strategy/tactics game ever made.
That said, XCOM 2 with the War of the Chosen DLC is also extremely fun and honestly more accessible. I also like it more because I can easily headcannon that they aliens are like the ones in They Live and that I'm overthrowing capitalism in the process.
I've spent over 1500 hours on these single player games so I can attest to how addictive they are with their gameplay.