After 50 years of pursuing high end audio, I have never found a single technology overwhelmingly the determinant of the sound quality. It is only one parameter in a mix of many.
While I found really cheap interconnects can be categorized into copper, silver coated copper, and silver to predict the ultimate sonic characteristics.
Move up a level and you have companies combining, geometry, diaelectrics, metal type, grain length… etc. and one parameter becomes irrelevant. They must be judged on their overall sonic character in your system.