My understanding is that a food issue actually came in the package of food at the store, a team issue was sold/given away by the team, usually at the stadium, and often has a corporate sponsor noted on the cards (which is often a sponsor from the food and beverage industry). And a team set is like the Topps sets of a specific team that they put out every year. Someone correct me if I'm wrong. I'm not sure which yours would be as I'm unfamiliar with the set, but if it came in cases of Pepsi, it's a food issue.
I'm going to reevaluate how I collect after the new year. It's just getting way too expensive for the new stuff. Sometimes I just want to buy a pack, not a whole box or even blaster.