Which food has less impact on blood sugar?

DOUGHNUT (ENRICHED WHEAT FLOUR WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), WATER, PALM OIL, SOYBEAN OIL, SUGAR. CONTAINS 2% OR LESS OF EACH OF THE FOLLOWING: YEAST, HYDROGENATED SOYBEAN OIL, SOY FLOUR, MONO- AND DIGLYCERIDES, SALT, WHEAT GLUTEN, MONOCALCIUM PHOSPHATE, SOY LECITHIN, DRIED MILK POWDER, CELLULOSE GUM, MALTODE TRIN, ASCORBIC ACID, CALCIUM PROPIONATE (TO MAINTAIN FRESHNESS), SORBITAN MONOSTEARATE, TOCOPHEROLS, OAT FIBER, DRIED EGG YOLKS, ENZYMES), ICING (SUGAR, WATER, COCOA, CORN SYRUP SOLIDS, CORN STARCH, PALM OIL, SOYBEAN OIL, CHOCOLATE LIQUOR, SOY LECITHIN, SALT, ENZYME MODIFIED SOY PROTEIN, MONO AND DIGLYCERIDES, POLYSORBATE 60, SODIUM HEXAMETAPHOSPHATE), TOPPING (MILK CHOCOLATE (SUGAR, CHOCOLATE, SKIM MILK, COCOA BUTTER, LACTOSE, MILK FAT, SOY LECITHIN, SALT, ARTIFICIAL AND NATURAL FLAVORS), SUGAR, COLORING (INCLUDES BLUE 1 LAKE, RED 40, YELLOW 6, YELLOW 5, BLUE 1, RED 40 LAKE, YELLOW 6 LAKE, YELLOW 5 LAKE, BLUE 2 LAKE, BLUE 2), CORN SYRUP, DEXTRIN, CORNSTARCH, CARNAUBA WAX), GLAZE (SUGAR, WATER, CORN STARCH, PALM OIL, AGAR, NATURAL AND ARTIFICIAL FLAVORS, GUAR GUM, LOCUST BEAN GUM), TOPPING (SUGAR, CORN STARCH, BLUE 1, BLUE 2, CARNAUBA WAX, CONFECTIONER'S GLAZE, RED 3, RED 40, YELLOW 5, YELLOW 6).