(A good deal of these are compiled from a list of Yakuza rankings. They are rather long. One of them is less so, but I thought it fitting.)]
Kumichō: Family Head, Leader.
Wakagashira: Captain, Taicho-Equivilant.
So-Honbucho: Second-in-command, equivilant of a powerful Taicho.
Shatei: New Recruit
Freebirth: A Vizard who was created by a hollow 'bonding' with a shinigami, rather than the effect of one of the two 'controlled' methods.