boss- head of the family
underboss- 2nd in command. If boss is killed/sick he takes over. Many capos report to him and he then reports to the boss.
consigliere- advisor to the boss. He gives the boss advice and interacts with other families
capo- Control a crew of soldiers/associates that make money for the family
soldier- lowest rank for made men that report to the capo
associate- men that aren't made yet ther could also be associates of different nationalities