As far as I’m aware the designation for the Light Cruiser (in our community) has been CL since the beginning, which I assumed stood for “Cruiser, Light”, and makes sense for the updated CB designation for Raven (CB-014) as “Cruiser, Battle” (Battlecruiser) and CM for the new Hydra (CM-008) “Cruiser, Missile”.
And I agree Matsiyan. I like the layout of the crew assignment document, but it’s definitely not a “quick quick reference”. 😛