Which food has less impact on blood sugar?

FROSTING ((SUGAR, VEGETABLE SHORTENING(PALM OIL, CANOLA OIL, MONOAND DIGLYCERIDES), WATER, CORN SYRUP.CONTAINS 2% OR LESS OF EACH OF THE FOLLOWING:HIGH FRUCTOSE CORN SYRUP, CORN STARCH, BLUE 1, NATURAL AND ARTIFICIAL FLAVOR, SALT, GUAR GUM, PHOSPHORIC ACID, POTASSIUM SORBATE (PRESERVATIVE), POLYSORBATE 60, SODIUM BENZOATE(PRESERVATIVE))., WATER, GLYCERINE, SUGAR, FD&C YELLOW #6, FD&C RED #40, MODIFIED CORN STARCH, FD&C BLUE #1, CARRAGEENAN, POTASSIUM SORBATE (PRESERVATIVE), XANTHAN GUM, CITRIC ACID, MALTODEXTRIN, DEXTROSE.), CAKE(SUGAR, BLEACHED ENRICHED WHEAT FLOUR (WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), VEGETABLE SHORTENING[SOYBEAN OIL, VEGETABLE MONO & DIGLYCERIDES, DISTILLED PROPYLENE GLYCOL ESTER, TOCOPHEROLS(VITAMIN E) AND VITAMIN C PALMITATE(AS ANTIOXIDANTS)], DRIED EGG WHITES, LEAVENING(SODIUM BICARBONATE, SODIUM ALUMINUM PHOSPHATE, MONOCALCIUM PHOSPHATE, SODIUM ACID PYROPHOSPHATE), DRIED EGG YOLKS.CONTAINS 2% OR LESS OF EACH OF THE FOLLOWING:NONFAT DRY MILK, FOOD STARCH-MODIFIED, SALT, DEXTROSE, CELLULOSE, DISTILLED MONOGLYCERIDES, NATURAL AND ARTIFICIAL FLAVORS(MILK), SODIUM STEAROYL LACTYLATE, POLYSORBATE 60, EMULSIFIER(PROPYLENE GLYCOL ESTERS OF FATTY ACIDS, DISTILLED MONOGLYCERIDES, SODIUM STEAROYL LACTYLATE), GUAR GUM, XANTHAN GUM, SOY FLOUR), WATER, SOYBEAN OIL.