Saw in trailer/ when ingame?

Where are the rest of the helmets shown off in the trailers?
Most are either ingame.
Or shown to be wearable later but still in menus, like EOD.

Also where’s my CQB at?

Unfortunately, we just don’t know. I wish we could see the items grayed out with some info about when we might expect to see them or how they will be acquirable (Progression / Store / Event / etc.). It would be nice to have something actionable to look forward to concerning key Halo armors and helmets.