Which food has less impact on blood sugar?

SUGAR, ENRICHED BLEACHED WHEAT FLOUR (WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), MARGARINE (PALM OIL, WATER, SOYBEAN OIL, SALT, MONO- AND DIGLYCERIDES, ARTIFICIAL BUTTER FLAVOR, CALCIUM DISODIUM EDTA [PRESERVATIVE], VITAMIN A PALMITATE), WATER, EGG, DECORATIONS (SUGAR, CORN STARCH, PALM & PALM KERNEL OIL, SOY LECITHIN, DEXTRIN, CARNAUBA WAX, CONFECTIONER'S GLAZE, FD&C YELLOW #6 LAKE, FD&C YELLOW #5 LAKE, FD&C BLUE #1 LAKE, FD&C RED #40, FD&C RED #3, FD&C BLUE #2), WATER, COLOR (PURIFIED WATER, SUGAR, SORBITOL, CARMINE, FD&C BLUE #2 LAKE, FD&C YELLOW #5 LAKE, FD&C BLUE #1 LAKE, FD&C YELLOW #5 LAKE, SOYA LECITHIN, TITANIUM DIOXIDE, SODIUM BENZOATE, EDTA, METHYL PARABEN, PROPYL PARABEN, PHOSPHORIC ACID), BAKING POWDER, NONFAT DRY MILK, PROPYLENE GLYCOL, MONO- AND DIESTERS OF FATS AND FATTY ACIDS, MONO- AND DIGLYCERIDES, SOY LECITHIN, CITRIC ACID, WHEAT GLUTEN ARTIFICIAL FLAVORS (WATER, PROPYLENE GLYCOL, ARTIFICIAL FLAVORS, CITRIC ACID)