Ironblood is basically SDM, huh?

Deustchland certainly looks quite Remilia-ish there, especially Satou Kibi's Remilia. She even has a big hat.

Yup, you have:

Charisma★Break: Deustchee, (Zep if you accept the chibi thing)
Unstable psychopath that has more power than is good for her or anyone else: Roon
Jaoooo fired up gate guard: Scharnhorst
Perfect maido: Z23? Graf? (This one is iffy, all the maids are in the RN)
Smart shut-in no one notices: Gneisenau or Koln.

graf looks like alice a bit imo

Also, I really hope more of this to come, need some azur lane love

Slysheen said:

Yup, you have:

Charisma★Break: Deustchee, (Zep if you accept the chibi thing)
Unstable psychopath that has more power than is good for her or anyone else: Roon
Jaoooo fired up gate guard: Scharnhorst
Perfect maido: Z23? Graf? (This one is iffy, all the maids are in the RN)
Smart shut-in no one notices: Gneisenau or Koln.

An absolute professional who is super strict, but also a slowly defrosting ice queen: Tirpitz
(No perfect meido in Ironblood because they're all in the Royal Navy; and Ironblood doesn't really have incompetent fairy maids).
Or the reasonable one that puts up with everyone's BS: Gneisenau

Bonus points: Glowworm's personailty resembles Cirno's.