Starfleet Rank Designations are part of the club as in the series. Here’s a list of Ranks categorized with Flag officers, Field officers, and Enlisted ranks. These rank graphics are from the  Kuro-RPG website. We are using the Star Trek Picard season 3 classes at this time.

Flag Officer Ranks

Fleet Admiral
Admiral (Full Admiral)
Vice Admiral
Rear Admiral (Upper Half)
Rear Admiral (Lower Half) or Commodore
Staff Captain
Fleet Captain

Officer Ranks

Captain
Commander
Lieutenant Commander
Lieutenant (Senior Grade)
Lieutenant (Junior Grade)
Ensign

Academy Ranks/Midshipmen

Fourth Year Cadet
Third Year Cadet
Second Year Cadet
First Year Cadet

Enlisted Ranks

Master Chief Petty Officer of Starfleet
Command Master Chief Petty Officer
Master Chief Petty Officer
Senior Chief Petty Officer
Chief Petty Officer
Petty Officer 1st Class
Petty Officer 2rd Class
Petty Officer 3rd Class
Crewman 1st Class
Crewman 2nd Class
Crewman 3rd Class
Crewman Recruit

Starfleet Marines Officers (AKA MACOs) All Officers Flag and Field Grade Officers

General of the Marines Corps
General
Lieutenant General
Major General
Brigadier General
Colonel
Lieutenant Colonel
Major
Captain
1st Lieutenant
2nd Lieutenant

Starfleet Marines (AKA MACOs) Enlisted Ranks

Sergeant Major
Master Gunnery/Master Sergeant
Gunnery Sergeant
Staff Sergeant
Sergeant
Corporal
Lance Corporal
Private First Class
Private