I have discovered two additional characters of mine who cannot log in. 5/8 of my characters can.

Name: Drol'ra Wodash
Sever: Balmung
Location: Twin Adder Barracks or New Gridania

Name: Odeve Nillefrant
Server: Balmung
Location: Ul'dah - Steps of Nald

Name: Weeping Scythe
Server: Balmung
Location: Ul'dah - Steps of Nald