Which food has less impact on blood sugar?

MILK, CREAM, . VANILLA FLAVORED ICING (WATER, VEGETABLE OIL [PARTIALLY HYDROGENATED PALM KERNEL], DEXTROSE, CORN SYRUP, SUGAR, SODIUM CASEINATE, POLYSORBATE 60, CELLULOSE GUM, NATURAL AND ARTIFICIAL FLAVOR, SALT, SOY LECITHIN, POLYGLYCEROL ESTERS OF FATTY ACIDS, XANTHAN GUM, COLORS*), SKIM MILK, SUGAR, CHOCOLATY CRUNCH (BLEACHED WHEAT YOUR, SUGAR, COCOA [PROCESSED WITH ALKALI], PALM OIL, CORN SYRUP, CORN FLOUR, SOY LECITHIN, BAKING SODA, SALT, NATURAL AND ARTIFICIAL FLAVORS), CORN SYRUP, WHEY PROTEIN CONCENTRATE, WHEY, BUTTERMILK, COCOA (PROCESSED WITH ALKALI), VANILLA EXTRACT. PACKAGED DECORATIVE OPTIONS MAY INCLUDE: CONFETTI (SUGAR, RICE FLOUR, CORNSTARCH, PARTIALLY HYDROGENATED VEGETABLE OIL [COTTONSEED, SOYBEAN], CARRAGEENAN, CELLULOSE GUM, CONFECTIONER'S GLAZE, SOY LECITHIN, GUM ARABIC, GUM TRAGACANTH, ARTIFICIAL FLAVOR, COLORS*), COLORED SPRINKLES (SUGAR, CORNSTARCH, PARTIALLY HYDROGENATED SOYBEAN OIL, SOY LECITHIN, CONFECTIONER'S GLAZE, COLORS*, NATURAL AND ARTIFICIAL FLAVOR, CARNAUBA WAX). *COLORS: ICING AND DECORATIONS MAY INCLUDE BLUE 1, BLUE 1 LAKE, BLUE 2, BLUE 2 LAKE, RED 3, RED 40, RED 40 LAKE, YELLOW 5 LAKE, YELLOW 6 LAKE, TITANIUM DIOXIDE.