@samhenrigold I saw a recent YouTuber mention this hardware device "C2C CABERQU" which seems to do what you want? I have not tried it yet, but he was using it in the video I watched to identify USB-C cable speeds.

caberqu.com/home/20-c2c-caberq

Here is the YouTube video I referenced, the guy mentions/shows it briefly at 6:07: youtu.be/XuofqeRbBfY?si=o_1nRB