Ok, I see that there are some settings in #Android 16 QPR1+ / #LineageOS 23.2 in regards to connected monitors under Settings -> Connected Devices -> External Displays.

But still, I can't find any option in there to enable Desktop Mode
Also, is there a consensus already about how this phenomenon is to be called?
Years ago it was referred to as "Mobile Convergence", but that means something else. Is there any more popular term for using-phone-as-a-pc than "desktop mode"?

#desktopmode #phoneaspc

Your Snapdragon phone is finally ready to be your laptop, too

More phones support display output, Snapdragon chips are ripping fast, and Arm is growing. The stars are aligning for phones that can also be laptops.

PCWorld