Shadow Dragon and the Blade of light (FE1):

• Minerva
• Wolf

Awakening (FE13):

• Lon’qu
• Frederick
• Cherche
• Gerome

Fates (FE14):

• Niles
• Leo
• Takumi
• Odin
• Rinkah
• Oboro

Three houses (FE16):

• Dedue
• Shamir

Engage (FE17)

• Fogado
• Alcryst
• Diamant
• Merrin
• Kagetsu
• Zephia/Zelestia
• Nel
• Rafal

I've also played the original warriors game but not Three Hopes. Probably not worth your time trying to talk to me about Three Houses either because my playthrough was extremely patchy and inconsistent so I don't really have any strong opinions about it.

Ships:

• Any combination of Leo/Niles/Odin
• Leo/Takumi
• I also ship Niles to a lesser extent with Minerva, Laslow, Takumi, Oboro and Camilla.
• Fogado/Alcryst