Which food has less impact on blood sugar?

VOLLMER'S CHOCOLATE CAKE MIX (SUGAR, BLEACHED FLOUR (WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), SHORTENING (SOYBEAN OIL, PROPYLENE GLYCOL, MONO AND DIESTERS OF FAT, STEARIC ACID, MONO AND DIGLYCERIDES), COCOA (PROCESSED WITH ALKALI) MODIFIED FOOD STARCH, EGG WHITES, NONFAT MILK, DEXTROSE, SODIUM BICARBONATE, SALT MONOCALCIUM PHOSPHATE, EGG YOLK, SODIUM ACID PYROPHOSPHATE, CARAMEL COLOR (CONTAINS SULFITES) POLYSORBATE 60, ASCORBIC ACID, SOY LECITHIN, XANTHAN GUM, TETRASODIUM PYROPHOSPHATE, ACACIA GUM, GUAR GUM, CORN SYRUP SOLIDS, SODIUM PROPIONATE (PRESERVATIVE), POTASSIUM SORBATE (PRESERVATIVE), RED 40 LAKE., WATER, GRANULATED SUGAR, ALL PURPOSE SHORTENING (PARTIALLY HYDROGENATED SOYBEAN AND COTTONSEED OIL), CHOCOLATE LIQUOR, SUGAR, COCOA BUTTER, ANHYDROUS MILK FAT SOY LECITHIN (AN EMULSIFIER) AND VANILLA, SOYBEAN OIL (SOYBEAN OIL), BUTTER, MILK, CARAT CHOCOLATE CHIPS ((SUGAR, CHOCOLATE LIQUOR, COCOA BUTTER, DEXTROSE, SOY LECITHIN (AN EMULSIFIER) AND NATURAL FLAVOR - MAY CONTAIN TRACE AMOUNTS OF MILK), WHIP TOPPING, HEAVY WHIPPING CREAM (HEAVY CREAM, CARRAGEENAN, MONO & DIGLYCERIDES, POLYSORBATE 80; CONTAINS MILK), CORN SYRUP, COCOA MASS, SUGAR, COCOA BUTTER, EMULSIFIER, SOY LECITHIN, FLAVORING, LIQUID INVERT SUGAR, VANILLA EXTRACT, ORANGE FLAVOR (WATER, PROPYLENE GLYCOL, XANTHAN GUM, POTASSIUM SORBATE, FD&C YELLOW 6, CITRIC ACID)