Ranks are confidential, you are only able to see the ranks if you are an employee of SAN.
Thomas MacDermott
Spoiler
Past characters:
Thomas Capelli
Thomas Paterno
Thomas Corleone
Thomas Hudson
Thomas Toro
Thomas Jay
Eire Laosieach
Thomas Stracci
Carlos Phantom
Jesus Chapa
This most be found out In-characterly as stated above. (Visit SAN's 'office' - talk with a member, even ask a friend if they know, but IC-ly)
It'll be considered as metagame if you're told the ranks OOC-ly and you use them IC-ly.