Which food has less impact on blood sugar?

ICING: SUGAR, VEGETABLE SHORTENING (PALM OIL, CANOLA OIL, MONO- AND DIGLYCERIDES, POLYSORBATE 60). CONTAINS 2% OR LESS OF: CORN STARCH, CORN SYRUP, GUAR GUM, HIGH FRUCTOSE CORN SYRUP, LACTYLIC ESTERS OF FATTY ACIDS, FOOD STARCH-MODIFIED, PHOSPHORIC ACID, POTASSIUM SORBATE (PRESERVATIVE), POLYSORBATE 60, SODIUM BENZOATE (PRESERVATIVE), PROPYLENE GLYCOL MONO AND DIESTERS OF FATS AND FATTY ACIDS, NATURAL AND ARTIFICIAL FLAVOR, SALT, WATER, BLUE 1, RED 3, RED 40 LAKE, YELLOW 5. YELLOW CAKE: WATER, SUGAR, BLEACHED ENRICHED FLOUR (WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), SOYBEAN OIL, VEGETABLE SHORTENING (PALM OIL, SOYBEAN OIL, PROPYLENE GLYCOL MONO- AND DIESTERS OF FATS AND FATTY ACIDS, MONO- AND DIGLYCERIDES, SOY LECITHIN). CONTAINS 2% OR LESS OF: NONFAT DRY MILK, DRIED WHOLE EGGS, DRIED EGG WHITES, WHEAT STARCH, FOOD STARCH- MODIFIED, BAKING SODA, SALT, DEXTROSE, SODIUM ALUMINUM PHOSPHATE, NATURAL AND ARTIFICIAL FLAVOR , EMULSIFIER BLEND (PROPYLENE GLYCOL ESTERS, MONO- AND DIGLYCERIDES, SODIUM STEAROYL LACTYLATE), SODIUM ACID PYROPHOSPHATE, POLYSORBATE 60, XANTHAN GUM, GUAR GUM, SODIUM STEAROYL LACTYLATE, MONOCALCIUM PHOSPHATE, YELLOW 6, YELLOW 5, SOY FLOUR. GARNISH: SUGAR, CORNSTARCH, RICE FLOUR, PALM OIL. CONTAINS LESS THAN 2% OF. GUM ACACIA, XANTHAN GUM, CONFECTIONER'S GLAZE, NATURAL AND ARTIFICIAL FLAVOR, YELLOW 6, YELLOW 5, RED 3, BLUE 1, POTASSIUM SORBATE [PRESERVATIVE], MONO- AND DIGLYCERIDES, POLYSORBATE 60.