Which food has less impact on blood sugar?

ICING SUGAR (SUGAR, CORNSTARCH), SUGAR, VEGETABLE OIL SHORTENING (CANOLA OIL, PALM OIL, PALM KERNEL OIL, MONOGLYCERIDES, POLYSORBATE 60), WATER, SOYBEAN AND/OR CANOLA OIL, BLEACHED ENRICHED WHEAT FLOUR (WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), CHOCOLATE FLAVORED SWIRL (WATER, SUGAR, CORN SYRUP, MODIFIED CORNSTARCH, COCOA POWDER [PROCESSED WITH ALKALI], COLOR [CARAMEL, TITANIUM DIOXIDE], SALT, AGAR-AGAR, SODIUM ACID SULFATE, POTASSIUM SORBATE [PRESERVATIVE], NATURAL AND ARTIFICIAL FLAVOR), FRUIT FILLING (WATER, SUGAR, MODIFIED CORNSTARCH, BLUEBERRIES, RASPBERRIES, STRAWBERRIES, NATURAL FLAVOR, CITRIC ACID, SALT, XANTHAN GUM, LOCUST BEAN GUM, CARRAGEENAN, SODIUM BENZOATE [PRESERVATIVE], COLOR [FD&C BLUE #1, FD&C RED #40]), EGGS, COCOA POWDER (PROCESSED WITH ALKALI), RASPBERRY FLAVOR COMPOUND (CORN SYRUP, RASPBERRY JUICE, FRUCTOSE, RASPBERRIES, CITRIC ACID, WATER, COLOR [BEET POWDER], SUGAR, PROPYLENE GLYCOL, PECTIN, SODIUM BENZOATE [PRESERVATIVE], NATURAL AND ARTIFICIAL FLAVOR), MODIFIED CORNSTARCH, BUTTER (CREAM, SALT), WHEY (MILK), NONFAT DRY MILK, INVERT SUGAR, CORN SYRUP, MONO- AND DIGLYCERIDES, LEAVENING BLEND (SODIUM ACID PYROPHOSPHATE, SODIUM BICARBONATE, CORNSTARCH, MONOCALCIUM PHOSPHATE, CALCIUM SULFATE), SALT, EMULSIFIER (PROPYLENE GLYCOL MONO- AND DIESTERS OF FATS AND FATTY ACIDS, MONO-AND DIGLYCERIDES, SOYBEAN LECITHIN, CITRIC ACID [PRESERVATIVE]), NATURAL AND ARTIFICIAL FLAVOR, SOYBEAN LECITHIN, LEMON JUICE CONCENTRATE, COLOR (FD&C RED #40).