Nowadays for USB/micro-USB cables there are some pretty good testers like the [RuiDeng] UM24/UM25, etc. that can measure even cable resistance.
Is there already something similar available for USB-C cables? Apart of having more wire pairs to check, there is also the difference between 'plain' cables and cables with e-marking (which e.g. affects Raspberry 4 owners), so having a small tester to check the the properties of an unknown cable would be handy.