Which food has less impact on blood sugar?

TRIPLE CHOCOLATE CUPCAKE (ICING SUGAR [SUGAR, CORN STARCH), SUGAR, WATER, SOYBEAN OIL, CANOLA OIL, BLEACHED ENRICHED WHEAT FLOUR (WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), VEGETABLE OIL SHORTENING (CANOLA OIL, PALM OIL, PALM KERNEL OIL, MONOGLYCERIDES, POLYSORBATE 60], CHOCOLATE FLAVORED FILLING [WATER, SUGAR, CORN SYRUP, MODIFIED CORN STARCH, COCOA POWDER PROCESSED WITH ALKALI, CARAMEL COLOR, SODIUM ACID SULFATE, SALT, NATURAL AND ARTIFICIAL FLAVOR, POTASSIUM SORBATE {PRESERVATIVE), AGAR-AGAR, TITANIUM DIOXIDE {COLOR}], EGG, COCOA POWDER PROCESSED WITH ALKALI, CHOCOLATE LIQUOR, MARGARINE [SOYBEAN OIL, PALM OIL, WATER SALT, WHEY, MONOGLYCERIDES, SOY LECITHIN, NATURAL FLAVOR, ANNATTO EXTRACT {COLOR}, TURMERIC EXTRACT {COLOR), VITAMIN A PALMITATE, VITAMIN D, ), BUTTER [CREAM, SALT), MODIFIED CORN STARCH, INVERT SUGAR, NONFAT DRY MILK, WHEY, CORN SYRUP, CHOCOLATE SPRINKLES [SUGAR, UNSWEETENED CHOCOLATE, COCOA POWDER PROCESSED WITH ALKALI, MILK FAT, SOY LECITHIN, NATURAL FLAVOR], MONO- AND DIGLYCERIDES, LEAVENING BLEND (SODIUM ACID PYROPHOSPHATE, SODIUM BICARBONATE, CORN STARCH, MONOCALCIUM PHOSPHATE, CALCIUM SULFATE), SALT, EMULSIFIER [PROPYLENE GLYCOL MONO- AND DIESTERS OF FATS AND FATTY ACIDS, MONO- AND DIGLYCERIDES, SOY LECITHIN, CITRIC ACID (PRESERVATIVE}], NATURAL FLAVOR, SOY LECITHIN).