@mattblaze You got me interested enough to check a few:
I'll spare you the many failures, but I have two (or three) successes!
"RAVpower PD Pioneer 90W 2 port wall charger" managed to stay on when I plugged my phone into the second port.
Also, an "Anker 615 USB power strip (GaN prime 65W)" did the same. I only checked plugging in a second usb-c plug, not the usb-a. (It is super useful on the road)
And, my PinePower, while not a bit portable, has 5 ports, only 1 usb-c with no disconnections, and helpful voltage displays.