Does it exist?
The cables that I have are 1.5 and 3m and charging with power delivery works fine (at least up to 60W), but the cables are really stiff.
I've another 1m long one which is thinner and a bit softer, but still quite stiff compared to my other USB-A to USB-C cable.
I realize that you need thicker wire for longer cables, but can't they use stranded wire like with soft AC power cables?