I looked at all of the cables going in the back of my big screen (almost every port has a cable) and the only one with a "CL" rating is the coax. HDMI, component, A/V, PC audio and the VGA cable are unrated.
I suppose the "safe" way would be to run a sleeve of 2" ENT or other raceway to pull the cables through. That still may not be "legal".
There is a good chance that any name brand cable would meet the flame/smoke test for CL2 but they don't seem to be marked.
OTOH if you are talking about some offshore cable, who knows what the insulation is? If they do get rated, it is only for signal quality. I have always been skeptical about the "in wall" systems sold for big screens. On the line side, they are basically just an extension cord inside a wall. They are largely beyond the inspection process since they are homeowner or "TV installer" items.
