Which food has less impact on blood sugar?

CREME CAKE MIX (SUGAR, ENRICHED FLOUR BLEACHED [WHEAT FLOUR, NIACIN, IRON, THIAMIN MONONITRATE, RIBOFLAVIN, FOLIC ACID], SOYBEAN OIL, MODIFIED CORN STARCH. 2% OR LESS OF: WHEY, MONO- & DIGLYCERIDES, LEAVENING [BAKING SODA, SODIUM ALUMINUM PHOSPHATE], VITAL WHEAT GLUTEN, SALT, SODIUM STEAROYL LACTYLATE, SORBITAN MONOSTEARATE, CALCIUM ACETATE, NONFAT MILK, GUAR GUM, XANTHAN GUM, POLYSORBATE 60, NATURAL & ARTIFICIAL FLAVOR, SOY FLOUR EGG), WHOLE EGGS, SOYBEAN OIL, WATER, STRAWBERRY PASTE (SUCROSE GLUCOSE SYRUP, CONCENTRATED STRAWBERRY PUREE, THICKENING AGENT [MODIFIED WAXY MAIZE STARCH], COLORANT [CONCENTRATED PURPLE CARROT JUICE, BETA-CAROTENE], ARTIFICIAL FLAVOR, CONCENTRATED STRAWBERRY JUICE, CITRIC ACID [ACIDULANT], POTASSIUM SORBATE, ANTIFOAMING AGENT [MONO- & DIGLYCERIDES]), PLAIN GREEK YOGURT (GRADE A PASTEURIZED SKIM MILK, CREAM, MILK PROTEIN CONCENTRATE, PECTIN, LIVE ACTIVE CULTURES: S. THERMOPHILUS, L. BULGARICUS, L. ACIDOPHILUS, BIFIDUS AND L. CASEI), SUGAR, BANANA PASTE (SUCROSE, GLUCOSE SYRUP, CONCENTRATED BANANA PUREE, CONCENTRATED BANANA JUICE, THICKENING AGENT [MODIFIED WAXY MAIZE STARCH], CITRIC ACID, ARTIFICIAL FLAVOR, BETA CAROTENE, POTASSIUM SORBATE), TOMATO RED COLOR (GLYCERINE, RED BEET CONCENTRATE, ANNATTO), BAKING POWDER (CORNSTARCH, SODIUM BICARBONATE, SODIUM ALUMINUM SULFATE, MONOCALCIUM PHOSPHATE), NATURAL & ARTIFICIAL BANANA FLAVOR (DEXTROSE, CORN STARCH, TRICALCIUM PHOSPHATE [PREVENTS CAKING], ALCOHOL), NATURAL STRAWBERRY FLAVOR (ORGANIC COMPATIBLE ALCOHOL, GLYCERIN, NATURAL FLAVORS)