Off the top of my head:
cereal on cabbage bar = barley
cereal on pumpkin bar = rye
cabbage on cotton bar = green cabbage
cabbage on pumpkin bar = white cabbage
cotton on cereal bar = egyptian cotton
cotton on cabbage bar = indian cotton
pumpkin on cereal bar = small sugar line
pumpkin on cotton bar = sugar treat line
I don't guarantee the accuracy of this.