Hey Wolfy, the JD (Jimmy Dean) and other brands of sausage they are talking about is seasoned raw meat as in picture 2 above, but packaged like picture 1.
I haven't seen this outside the US, and they get loads of flavours e.g. Breakfast Sausage, Hot Sausage, Italian Sausage, even the chorizo they talk about is raw meat chorizo style in a chubb - if you're more used to the spanish type you can just slice and eat.
Us non-Americans, achieve the same by either using pork mince (your picture 2) with BBQ rub and/or other seasonings mixed in to taste or by using sausage meat from the butcher/supermarket or taking the meat out of actual sausages of different flavours.
I was in the States earlier this year and I spent a lot of my time just scouring the supermarkets for all the ingredients our American Brethren take for granted. Although I did end up smoking my first 'naked fatty' (Jimmy Dean Maple with Simply Marvelous Sweet & Spicy rub), I was mostly just out to see what they look like and how to adapt ingredients available to myself.