I have a bunch, as my lair has multiple lore groups.
None of them have any particular songs I associate with them though
Cerberus- my progen and ofc leader of the Empire of Death, which has subclans in Plague & Shadow.
Subclans lead by these guys below (Lucifi, the tundra, is also the 2nd in command)
They also have a prison location called the Bleak Meadow Prison, which is ran by the wardens Khaadgrim & Sugar Meadow
Then my 2nd lore group is the Frozen Heavens Kingdom ran by Sanctus
She's a demi-god and has territory in Ice + a small area in Light
Tantris is the king of the Adamas Realm located in Arcane, which is an ally to the Frozen Heavens Kingdom
Eris is queen of the Verum Adamas Realm in Arcane after her adoptive brother Tantris ran her out of the Adamas Realm
Rasul took over the Fortess of Bone in Earth by force, which was originally ran by Eris' son Aiki. He isn't exactly a king but as the new leader does command respect from those who live there.