Type C is just a plug its nothing to do with the USB bandwidth. Its a bit like power plugs, lots of different types that doesnt really dictate how much power they give.
For example:
My tablet uses USB 2.0 with a Type C port
My phone uses USB 3.0 with a type C port
Cables will meet the bandwith from the standard they are desinged to use i.e. 2.0, 3.0, 3.1 etc - not the ports standard.
I made the same mistake trying to get a longer USB-C to USB-C cable for my monitor (the monitor is also a USB hub). I can't seem to find any USB-C to USB-C 3.0+
Type C is just a plug its nothing to do with the USB bandwidth. Its a bit like power plugs, lots of different types that doesnt really dictate how much power they give.
For example:
Cables will meet the bandwith from the standard they are desinged to use i.e. 2.0, 3.0, 3.1 etc - not the ports standard.
You will need USB 3.0+ with a Type C plug