Which food has less impact on blood sugar?

MARBLE CAKE (WHITE CAKE MIX [SUGAR, BLEACHED ENRICHED FLOUR (WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMIN MONONITRATE, RIBOFLAVIN, FOLIC ACID), VEGETABLE SHORTENING {PALM OIL, SOYBEAN OIL, PROPYLENE GLYCOL MONOESTERS, MONO- AND DIGLYCERIDES, SOY LECITHIN}, VEGETABLE SHORTENING {PALM OIL}, NONFAT DRY MILK, LACTOSE, CONTAINS 2% OR LESS OF EACH OF THE FOLLOWING: MODIFIED FOOD STARCH {CORN, TAPIOCA}, WHEAT STARCH, SALT, SODIUM BICARBONATE, ACIDIC SODIUM ALUMINUM PHOSPHATE, ALUMINUM SULFATE, NATURAL AND ARTIFICIAL FLAVOR {MILK}, MONOCALCIUM PHOSPHATE, SODIUM ACID PYROPHOSPHATE, XANTHAN GUM, POLYSORBATE 60, EGG WHITES], WATER, DEVILS FOOD CAKE MIX [SUGAR, BLEACHED ENRICHED FLOUR (WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMIN MONONITRATE, RIBOFLAVIN, FOLIC ACID), VEGETABLE SHORTENING {PALM OIL}, COCOA {PROCESSED WITH ALKALL}, NONFAT DRY MILK, LACTOSE, VEGETABLE SHORTENING {PALM OIL}, SOYBEAN OIL, PROPYLENE GLYCOL MONOESTERS, MONO AND DIGLYCERIDES, SOY LECITHIN, MODIFIED FOOD STARCH {CORN, TAPIOCA), DEXTROSE, CONTAINS 2% OR LESS OF EACH OF THE FOLLOWING: WHEAT STARCH, CARAMEL COLOR {WITH SULFITES}, SODIUM BICARBONATE, SALT, NATURAL AND ARTIFICIAL FLAVOR {MIL}, SODIUM ACID PYROPHOSPHATE, MONOCALCIUM PHOSPHATE, ACIDIC SODIUM ALUMINUM PHOSPHATE, ALUMINUM SULFATE, XANTHAN GUM, POLYSORBATE 60), EGG WHITES [SODIUM AND TRIETHYL CITRATES AND GUAR GUM ADDED AS WHIPPING AIDS], SOYBEAN OIL, PASTEURIZED WHOLE EGGS, ALMOND EMULSION [WATER, ARTIFICIAL FLAVORS, XANTHAN GUM, CITRIC ACID AND SODIUM BENZOATE]), WHITE BUTTERCREAM (FONDANT SUGAR [SUCROSE, CORN STARCH], SHORTENING [PALM OIL, MONO AND DIGLYCERIDES, POLYSORBATE 80, CITRIC ACID {PRESERVATIVE}], SALTED BUTTER [PASTEURIZED CREAM, SALT], WATER, INVERT SYRUP, SALT [CONTAINS YELLOW PRUSSIATE OF SODA {ANTICAKING AGENT}], VANILLA FLAVOR [WATER, PROPYLENE GLYCOL, ALCOHOL, ARTIFICIAL FLAVORS, CITRIC ACID]), PAN GREASE OIL (SOYBEAN OIL, PETROLATUM AND 2% OR LESS OF EACH OF THE FOLLOWING: SUNFLOWER LECITHIN, MONO- AND DIGLYCERIDES, BHT [ANTIOXIDANT]).