Which food has less impact on blood sugar?

523 CAKE MIX (SUGAR, ENRICHED FLOUR BLEACHED [WHEAT FLOUR, NIACIN, IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID], EGG WHITE, SOYBEAN OIL, PALM OIL, LEAVENING [BAKING SODA, SODIUM ALUMINUM PHOSPHATE, ALUMINUM SULFATE, MONOCALCIUM PHOSPHATE], EGG YOLK WITH SODIUM SILICOALUMINATE, MODIFIED TAPIOCASTARCH, DEXTROSE, COCOA PROCESSED WITH ALKALI, NATURAL AND ARTIFICIAL FLAVOR, PROPYLENE GLYCOL MONO AND DIESTERS OF FATTY ACIDS, SALT, SORBITAN MONOSTEARATE, NONFAT MILK, DICALCIUM PHOSPHATE, TETRASODIUM PYROPHOSPHATE, XANTHAN GUM, POLYSORBATE 60, MONO AND DIGLYCERIDES, CALCIUM ACETATE, GUAR GUM, RED 40, CELLULOSE GUM, SOY FLOUR), WATER, CREAM CHEESE FLAVORED ICING (SUGAR, CREAMCHEESE [PASTEURIZED MIL AND CREAM, SALT, CAROB BEAN GUM, CHEESE CULTURE], PALMOIL, CORNSTARCH, ARTIFICIAL FLAVOR, BETA CAROTENE [COLOR], CITRIC ACID, DEXTROSE, FOOD STARCH- MODIFIED, MONO- AND DIGLYCERIDES, POLYSORBATE 60, PRESERVATIVE [POTASSIUM SORBATE], PROPYLENE GLYCOL SALT, SOYBEAN OIL, WATER), CHOCOLATE ICING (SUGAR, CORN SYRUP, PALM OIL, WATER, COCOA PROCESSED WITHALKALI, CARAMEL COLOR, MONO AND DIGLYCERIDES NATURAL AND ARTIFICIAL FLAVOR, POLYSORBATE 60, PRESERVATIVES [SODIUM PROPIONATE SORBIC ACID], SALT, SOYLECITHIN, SOYBEAN OIL), SOYBEAN OIL, POWDERED SUGAR WIT CORN STARCH(ANTICAKING AGENT), ICING BASE (VEGETABLE SHORTENING [INTERESTERIFIED SOYBEAN OIL, FULLY HYDROGENATED COTTONSEED OIL, MONO AND DIGLYCERIDES, POLYSORBATE 60], SUGAR, CORN SYRUP SOLIDS, TITANIUM DIOXIDE [COLOR], SALT, ARTIFICIAL FLAVOR) , PAN RELEASE (SOYBEAN OIL, MINERAL OIL SOY LECITHIN, ACETIC ACID ESTER OFDISTILLED MONO-DIGLYCERIDES, ANTIOXIDANT [MONO- AND DIGLYCERIDES, SOYBEAN OIL, TERTIARY BUTYL HYDROQUINONE, PROPYLENE GLYCOL, CITRIC ACID], SILICONE).