Which food has less impact on blood sugar?

RED VELVET CAKE (SUGAR, ENRICHED FLOUR BLEACHED (WHEAT FLOUR, NIACIN, IRON, THIAMIN MONONITRATE, RIBOFLAVIN, FOLIC ACID), EGG WHITE, SOYBEAN OIL, PALM OIL, LEAVENING (BAKING SODA, SODIUM ALUMINUM PHOSPHATE, MONOCALCIUM PHOSPHATE), EGG YOLK WITH SODIUM SILICOALUMINATE, MODIFIED TAPIOCA STARCH, DEXTROSE, COCOA PROCESSED WITH ALKALI, NATURAL AND ARTIFICIAL FLAVOR, SORBITAN MONOSTEARATE, PROPYLENE GLYCOL MONO AND DIESTERS OF FATTY ACIDS, SALT, NONFAT MILK, DICALCIUM PHOSPHATE, TETRASODIUM PYROPHOSPHATE, XANTHAN GUM, MONO AND DIGLYCERIDES, POLYSORBATE 60, CALCIUM ACETATE, GUAR GUM, RED 40, CELLULOSE GUM, SOY FLOUR), SUGAR, WHEAT FLOUR, SOYBEAN OIL, CORN SYRUP, PASTEURIZED MILK AND CREAM, SUGAR, EGGS (WITH CITRIC ACID), MARGARINE (INTERESTERIFIED SOYBEAN OIL, WATER, SALT, MONO- AND DIGLYCERIDES, COLORED WITH ANNATTO/TURMERIC, CALCIUM DISODIUM EDTA ADDED AS A PRESERVATIVE ARTIFICIAL BUTTER FLAVOR, VITAMIN A PALMITATE ADDED.), CONTAINS 2% OR LESS OF THE FOLLOWING: SALT, CORN STARCH, SOY LECITHIN, SOY PROTEIN, NATURAL & ARTIFICIAL FLAVORS, ALCOHOL, VANILLA BEAN EXTRACTIVES, CHEESE CULTURE, XANTHAM GUM, LOCUST BEAN GUM, GUAR GUM, CAROB GUM, CITRIC ACID, SOY FLOUR, CANOLA OIL, DEXTROSE, MALTODEXTRIN, YELLOW 5 & 6, SODIUM BENZOATE (PRESERVATIVE), POTASSIUM SORBATE (PRESERVATIVE), CALCIUM PROPIONATE (PRESERVATIVE), TOCOPHEROLS (PRESERVATIVE), MALTED BARLEY, COLOR ADDED.