For the record, not all hotdogs, per item 8, are the same. Yes, your Oscar Meyer, Bar S, and other cheap 99 cent dogs are disgusting.
Premium manufacturers use trim, water, salt, seasonings, cure (sodium nitrite), and usually a listeria inhibitor, such as Vinegar or a sodium lactate/diacetate blend such as Opti. And that's it. If we had complete control of the hot dogs, we wouldn't even use the Opti or vinegar, but lawyers are what they are.
As for #13, we don't use liquid smoke, but using it is actually "greener" than burning wood chips. Simply, the manufacturer or liquid smoke burns chips, sends all the smoke through process whereby the smoke is all sucked up into the liquid. That liquid drenches the product. None of the smoke goes to the atmosphere. We don;t care for the taste of liquid smoke, though they have gotten much better recently.