Which is why I think designating gold/green/avocado (and later red) as the Command Division color was dumb as is having a Command division.
Having a Command Division isn't dumb. What's dumb is grouping Command, Flight Control (and sometimes Armory).
Are command level officers in their own division?
Yes and no. "Command Level Officer" is a specific community within most naval forces with it's own badges and such. A different shirt colour is one way of doing this, though a different (symbol within the) badge on the same shirts (see below) would also have been a servicable option.
In retrospect, Gold should have been called Operations and Red called Services, IMO. Command should be a term reserved for the CO, XO and 2nd Officer. Leaders on the ship level and above.
That would roughly consistent with how some naval forces do it if "Deck Department = Operations":
Flight Operations (both auxiliary craft and Bridge Flight Control/Helm/Navigation Console).
Security
Armory Technician (Though this could be separated into AT (below decks, part of Engineering) and Tactical Officer (Operations, mans bridge console, likely also CONN rated)).
Legal
Logistics and Administration.
Communications (mans Bridge Communications console, does not maintain system), may share at least senior officers with:
Signals Intelligence.