Which food has less impact on blood sugar?

CAKE BASE (SUGAR, ENRICHED WHEAT FLOUR BLEACHED [FLOUR, NIACIN, IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), FOOD STARCH-MODIFIED, SOYBEAN OIL, CONTAINS 2% OR LESS OF: DEFATTED SOY FLOUR, EGGS, LEAVENING (BAKING SODA, SODIUM ALUMINUM PHOSPHATE), MONO- AND DIGLYCERIDES, NATURAL AND ARTIFICIAL FLAVOR, PROPYLENE GLYCOL MONO-AND DIESTERS OF FATTY ACIDS, SALT, SODIUM STEAROYL LACTYLATE, VITAL WHEAT GLUTEN, WHEY), POWDERED SUGAR (SUGAR, CORNSTARCH), WATER, SOYBEAN OIL, WHOLE EGGS, SUGAR, CORN SYRUP, STRAWBERRY FILLING (WATER, HIGH FRUCTOSE CORN SYRUP, STRAWBERRIES, CORN SYRUP, MODIFIED FOOD STARCH, EVAPORATED APPLE [PRESERVE WITH SODIUM SULFITE], PRESERVATIVES (SODIUM BENZOATE, SODIUM PROPIONATE, POTASSIUM SORBATE), SALT, ARTIFICIAL FLAVOR, LEMON JUICE CONCENTRATE, CITRIC ACID, RED 40, PHOSPHORIC ACID, BLUE 1), STRAWBERRY FILLING (STRAWBERRIES, WATER, HIGH FRUCTOSE CORN SYRUP, SUGAR, MODIFIED CORN STARCH, CORN SYRUP, CONTAINS 2% OR LESS OF THE FOLLOWING: CITRIC ACID, NATURAL FLAVOR, SODIUM BENZOATE, AND POTASSIUM SORBATE (PRESERVATIVES), SALT, F.D. & C. RED 40), PALM OIL, NATURAL AND ARTIFICIAL FLAVORS, EGG EXTENDER (WHEAT FLOUR, EGGS, SOY OIL, CONTAINS 2% OR LESS OF: CARBOXYMETHYL CELLULOSE, SOY LECITHIN, SALT, SODIUM BICARBONATE, ANNATTO, TURMERIC), ICING STABILIZER (DEXTROSE, CALCIUM SULFATE, CALCIUM CARBONATE, AGAR AGAR, CONTAINS 2% OR LESS LOCUST BEAN GUM, MONO- & DIGLYCERIDES), MALTODEXTRIN, ICING STABILIZER (DEXTROSE, CALCIUM SULFATE, CALCIUM CARBONATE, AGAR AND 2% OR LESS OF EACH OF THE FOLLOWING: SALT, MONO- AND DIGLYCERIDES, TITANIUM DIOXIDE [COLOR], LOCUST BEAN GUM, CORN STARCH, ARTIFICIAL FLAVOR, SODIUM ALUMINOSILICATE [FLOW AID]), COCOA PROCESSED WITH POTASSIUM CARBONATE, ICING STABILIZER (SUGAR, CALCIUM CARBONATE, AGAR, SALT, MONOGLYCERIDES), COCOA POWDER COCOA (PROCESSED WITH ALKALI), SODIUM PROPIONATE (PRESERVATIVE), TITANIUM DIOXIDE (COLOR), CITRIC ACID, SALT, RED COLOR (WATER, FD&C RED #40, SODIUM BENZOATE, CITRIC ACID).