Which food has less impact on blood sugar?

SUGAR, HERSHEY'S SPECIAL DARK, SYRUP (HIGH FRUCTOSE CORN SYRUP, CORN SYRUP WATER, COCOA ALKALI PROCESSED, SUGAR, SALT, MONO AND DIGLYCERIDES, XANTHAN GUM, POLYSORBATE 60, ARTIFICIAL FLAVOR), ENRICHED BLEACHED WHEAT FLOUR (FLOUP., NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), VEGETABLE SHORTENING (PALM OIL, MONO AND DIGLYCERIDES, POLYSORBATE 60), EGGS, MARGARINE (PALM OIL, WATER, SOYBEAN OIL, SALT, MONO AND DIGLYCERIDES, ARTIFICIAL FLAVOR, ANNATTO EXTRACT, TO PRESERVE FRESHNESS [CALCIUM DISODIUM EDTA], VITAMIN A PALMITATE), INVERT SUGAR, CULTURED BUTTERMILK (CULTURED MILK NONFAT MILK, MODIFIED CORNSTARCH, SODIUM CITRATE, LOCUST BEAN GUM, CARRAGEENAN, MONO AND DIGLYCERIDES, SALT, VITAMIN A PALMITATE, VITAMIN D3), COCOA ALKALI PROCESSED, SEMISWEET CHOCOLATE (SUGAR, CHOCOLATE LIQUOR, COCOA BUTTER, MILKFAT, SOY LECITHIN, NATURAL FLAVOR, SALT), CONTAINS LESS THAN 2% OF THE FOLLOWING: HEAVY CREAM (CREAM MILK, NONFAT MILK, CARRAGEENAN, CELLULOSE GUM, MONOGLYCERIDES, POLYSORBATE 80, SALT, GUAR GUM), PALM AND PALM KERNEL OILS, MODIFIED CORNSTARCH, LEAVENING (SODIUM ACID PYROPHOSPHATE, BAKING SODA, MONOCALCIUM PHOSPHATE), NATURAL AND ARTIFICIAL FLAVOR, MILK, NONFAT DRY MILK, NATURAL FLAVOR, SALT, CORN SYRUP, SOY LECITHIN, SOYBEAN OIL, HIGH FRUCTOSE CORN SYRUP, TO PRESERVE FRESHNESS (POTASSIUM SORBATE, PROPYLENE GLYCOL), CITRIC ACID