I don't have an actual DisplayPort monitor, and the laptop has a full-size HDMI port, so I don't need the DisplayPort to connect an external HDMI monitor, but I will be moving to DP in the future.
I still have to test the Gigabit Ethernet port. Linux does seem to recognize it, but at the moment, I'm in an online meeting, so I don't want to disturb my network connection right now. Also, I need to find another Ethernet cable for that.
The USB-C PD power passthrough also seems to work.