Which food has less impact on blood sugar?

SUGAR, ENRICHED BLEACHED AND UNBLEACHED FLOUR (WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMIN MONONITRATE, RIBOFLAVIN, FOLIC ACID), WATER, HYDROGENATED PALM KERNEL OIL, NONFAT MILK, EGGS, VEGETABLE OIL (SOYBEAN OIL AND PALM OIL), CHOCOLATE BITS (WHEAT FLOUR, SUGAR, COCOA [PROCESSED WITH ALKALI], WHEAT STARCH, CANOLA OIL, SALT, SODIUM BICARBONATE), CONFECTIONERY COATING (SUGAR, PALM KERNEL AND PALM OILS, COCOA PROCESSED WITH ALKALI, SOY LECITHIN, SALT, VANILLIN, WHEY (MILK]), CONTAINS 2% OR LESS OF EACH OF THE FOLLOWING: GLYCERINE, MONOGLYCERIDES, DEXTROSE, COCOA (NATURAL AND PROCESSED WITH ALKALI), CORN SYRUP, HIGH FRUCTOSE CORN SYRUP, LEAVENING (SODIUM ACID PYROPHOSPHATE, BAKING SODA, MONOCALCIUM PHOSPHATE), MODIFIED CORN STARCH, SALT, CORN STARCH, TITANIUM DIOXIDE (COLOR), SODIUM STEAROYL LACTYLATE, DATEM, MONO- AND DIGLYCERIDES, XANTHAN GUM, VANILLA BEAN POWDER, SOY LECITHIN, CITRIC ACID, TRICALCIUM PHOSPHATE, POLYSORBATE 60, SORBITAN MONOSTEARATE, NATURAL AND ARTIFICIAL FLAVORS, ENZYMES, WHEAT GLUTEN, CORN FLOUR, WHEAT STARCH, POTATO STARCH, PROPYLENE GLYCOL MONOESTER, WHEAT FLOUR, ASCORBIC ACID, CELLULOSE GUM, SODIUM ALGINATE, SORBIC ACID AND POTASSIUM SORBATE (TO RETARD SPOILAGE).