I bought and installed the main game and all the DLC but I only have access to the following,

Alien: Isolation
Crew Expendable
Last Survivor
Survivor Mode

The other DLC, listed below, is not available to me as far as I can tell. I have installed them all but they don't appear on a menu and they do not install with EXEs to launch them.

Corporate Lockdown
Lost Contact
Save Haven
The Trigger
Trauma

the Commie Committee have decreed the immediate and total prohibition of said DLCs to the general population.

PS Please stay where you are.

Those are just maps for the Survivor Mode.