Which food has less impact on blood sugar?

VANILLA CAKE (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), WATER, CONFECTIONER'S SUGAR (SUGAR, CORNSTARCH), EGGS, RAINBOW SPRINKLES (SUGAR, CORNSTARCH, HYDROGENATED PALM KERNEL OIL, SOYA LECITHIN, GUM ARABIC, CONFECTIONER'S GLAZE, FD&C COLORS (YELLOW #6 LAKE, YELLOW #5 DYE, YELLOW #5 LAKE, BLUE #1 LAKE, RED #40 LAKE, RED #3 DYE), SOYBEAN OIL, VEGETABLE SHORTENING (SOYBEAN OIL, HYDROGENATED SOYBEAN OIL, HYDROGENATED COTTONSEED OIL, MONO- AND DIGLYCERIDES, POLYSORBATE 60, TBHQ AND CITRIC ACID ADDED TO HELP PRESERVE FRESHNESS), SUGAR, PUDDING (MODIFIED TAPIOCA STARCH, DEXTROSE, SALT AND 2% OR LESS OF EACH OF THE FOLLOWING: TITANIUM DIOXIDE [COLOR], CARRAGEENAN, GLUCONO DELTA LACTONE, PRESERVATIVES [POTASSIUM SORBATE, SODIUM BENZOATE], ARTIFICIAL FLAVOR, CORN STARCH, SILICON DIOXIDE [FLOW AID], YELLOW 5, YELLOW 6), MARGARINE (PALM OIL, SOYBEAN OIL, CULTURED SKIM MILK, SKIM MILK, SALT, MONO-DIGLYCERIDES, SOY LECITHIN, VITAMIN A, PALMITATE, COLORED WITH BETA CAROTENE [SOURCE OF VITAMIN A], NATURAL AND ARTIFICIAL FLAVOR), CHERRIES (CHERRIES, SUGAR, GLUCOSE, WATER, CITRIC ACID, SODIUM BENZOATE, ARTIFICIAL FLAVOR, COLOR [FD&C RED #40], SULPHITING AGENT, CALCIUM CHLORIDE), NATURAL AND ARTIFICIAL FLAVORS