What are the top 3 USB cables being used today in reference systems?

I can vouch for and highly recommend the original Curious.
Have used it with a Chord Qutest first with a Melco N1A and more recently with a Roon Nucleus.
Been well reviewed from the likes of Darko, HIFI-Advice and Audio Bacon.

By the way, I am not an engineer, I am a financial planner. So if what I wrote in my previous post is incorrect then I will just instead say that it is my opinion. Also, to those who do not believe cables make a difference stop calling those that can hear the difference foolish. How many fools can go around buying this type of equipment for very long? The answer is none of them. These are by and large very well educated people who have succeeded in life as a result of their intelligence and enjoy their  hobby. If you find pleasure in criticizing others that do enjoy their hobby it means that you need to find a different hobby that brings you happiness and that this is not the right hobby for you. 

Shunyata Research Alpha.. bested  more than a few contenders

With all these suggestions, good luck in your search Glory!

would love to know if anyone has heard curious evolved and fta callisto and/or shunyata venom/alpha/sigma.

i have a curious evolved but never heard anything other.  on order is an fta.  wondering if i should have gone alpha.  part of me suspects alpha will be noiseless but also tonally deficient.  not sure if that is a reasonable thought or not.