This is an old post. I just had the same questions, finding an HDMI cable with this specification printed on the cable jacket. I did a Google search on this cable number (E119932-T AWM 20276 80degC 30V VW-1 COPARTNER) .
After getting no result from my search, I came across this post with more info than any other. I remembered that I purchased my cable from Monoprice, so looked up their invoice and the two three foot cables I bought from Monoprice show it as 28 AWG High Speed HDMI cable. Monoprice is one of the few cable suppliers I've found that actually show the gauge of their cable.
So this is a 28 AWG cable.
I like Monoprice. High quality, fast shipping, good price and you know what you are buying. They also have excellent technical support.
Maybe this will help someone else.