USB was supposed to rule them all but it’s now a mess of standards sharing the same connector. Different speeds, voltage, charging protocols, alt modes, even the number of pins used is variable… For those asking, the thing is available on Kickstarter
Loads for me. It is a video of a small device with a screen. Both ends of a usb-c cable are connected to the device and the screen shows the max power, max data speeds and other information about the cable.