We have brought DEN GND/CLNC back online! With that addition, everything but the Ramp channels is covered.
Please be aware that DEN does a lot of "patching" or simulcasting at night, as fewer controllers are needed. This is why you may hear what sounds like TWR controllers handing off departing aircraft on a GND channel. But in fact, the controller is simultaneously keying up on all channels they are responsible for, at that moment.
Incidentally, for those of you who aren't aware, this also happens at DEN TRACON, with controllers handling ARR and DEP simultaneously. Typically at night, both the controller and pilot will only be heard on DEP channels (regardless of inbound or outbound), while only the controller is heard on ARR.