I will list royals here, so you know if a position is taken or not.
Aradia:
Queen: Open
King: Open
Princesses: Open
Princes: Open
Ragi:
Queen: Taken
King: Open
Princesses: Taken
Princes: 1 of 2 Taken
Sorencia:
Queen: Open
King: Open
Princesses: 1 of 3 Taken
Princes: Open