Spec-chart for digital cables

If you are thinking a spec sheet will somehow help you determine what they might sound like, or to construct to a sound. It is not going to do either of those.  
 

Somewhere in the research labs of some of the major cable producers there may be such a thing. With long lists of variables and how they may affect the sound. But even these would likely only be generalities. 
 

I am by my nature a numbers man. As a scientist in my first career and years as an analyst in the corporate setting. I threw away the numbers other than a few high level ones in audio. They just led to erroneous conclusions. 

To your point, I will agree that digital is still garbage in/garbage out.

For streaming you have packet loss, latency, bandwidth etc. which effect the signal prior to reception, so I am looking to ignore these and do a direct comparison of cable formats. With all factors being even, which cable reproduces the cleanest signal.

And yes I understand that cable construction will also effect the system, so we don’t need to head down that tangent.

mike

OP,  “For streaming you have packet loss, latency, bandwidth etc. which effect the signal prior to reception..”

A good streamer will buffer and cashe and completely make up for deficiencies in the data stream.

With all factors being even, which cable reproduces the cleanest signal.

That’s a fallacy.  You’re looking for something that simply doesn’t exist.  You’re also leaving out noise and shielding, which inputs are optimized on which component, etc..  There are simply too many variables to say “all factors being even.”  

I would refer you to Blue Jean and Belden WEB sites.  Not only do they have specs, but they are real and tested to them. 

Agree with @tvrgeek 100%. Great products and people. Hard to go wrong with anything Belden / Blue Jeans / Iconoclast makes.