I have no idea. Even just the smell of pickles makes me sick. Has ever since I was a little kid. And the neighbor kids were obsessed with the pickles jarred in kool-aid and exploited their ability to make me ill. So maybe I'm just highly aware of pickles?
I can't remember what brands sell them. I just remember seeing them in stores when I was a kid. I make it a point to not frequent the aisles with pickles as an adult, as it seems someone always manages to break open at least a single pickle jar while I'm in the aisle.