Which cables did you order? If i could post video here I could show how sensitive any USB-c cable is with Apple Carplay.
If I hit something in the road like a crease or a driveway transition that sends a small shock through the car...it loses connection.
Yes Lightning 'held' better and didnt lose connection with apple carplay but the other benefits of USB-c still make it a welcome addition to the iphone. The transfer speeds alone are worth it but also the fact that it's saving me clutter and the ability to use the same usb-c cable for 99% of my electronics is awesome.
I haven't tried the official braided USB-C that came with the phone since my carplay uses Usb-A...but maybe i'll try a USB-A to C adapter and see if the apple braided cable is worthwhile.