Lyndis: A decent character overall. I liked her until post tutorial where she becomes kind of stubborn and irritable. It's reasonable but didn't really sit well for me for the first couple of times she's done it.
Eliwood: The nicest and most humble of all lords in his game so he's an OK character, but respectable.
Hector: Love this guy's attitude, based AF. Definitely liked the bond between him and Eliwood, and even the implied(?) ship between him and Lyn even if they may not show it.
Eirika: Some of her actions is one of the most irresponsible/stupidest things that I've had to witness. I'm not a fan of her.
Ephraim: (Only judging from Eirika's Route) He's got that Eliwood vibe.
Chrom: There isn't anything special about him, so I didn't really care.
Lucina: One of my favorite female lords. Admired her ambition to see the world a better place.
Robin: I personally don't care for customizable MUs.
Corrin: Same deal as Robin.
Alm: It's been so long since I touched the remake, but from what I remember he's okay?
Celica: I can't remember too. She's okay I guess.
Edelgard: I liked her personal life and past, another one of my favorite female lords.
Dimitri: (Never done his route) Judging a book by it's cover, I don't like him.
Claude: Very likeable & chill guy, and enjoy his mischievous demeanor. Unfortunately, there's not much about him because his route doesn't seem to treat him as a main lord.
Byleth: Same deal as Robin. Probably my least favorite MU.