Which food has less impact on blood sugar?

ENRICHED WHEAT FLOUR (WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMNE MONONITRATE, RIBOFLAVIN AND FOLIC ACID), MARGARINE [PALM OIL, SOYBEAN OIL, WATER, SALT, VEGETABLE MONOGLYCERIDES, SOY LECITHIN, SODIUM BENZOATE AND CITRIC ACID (PRESERVATIVES), ARTIFICIAL FLAVOR, BETA CAROTENE (COLOR), VITAMIN A PALMITATE ADDED], RASPBERRY FILLING [HIGH FRUCTOSE CORN SYRUP, WATER, RED RASPBERRIES, FOOD STARCH-MODIFIED, CORN SYRUP, PROPYLENE GLYCOL, SALT, SODIUM BENZOATE & POTASSIUM SORBATE (AS PRESERVATIVES), CITRIC ACID, LOCUST BEAN GUM, XANTHAN GUM, NATURAL AND ARTIFICIAL FLAVOR, SUGAR], WATER, SUGAR, CORNSTARCH, WHOLE EGGS, HIGH FRUCTOSE CORN SYRUP, [WATER AND MONOGLYCERIDES WITH PROPIONIC ACID AND PHOSPHORIC ACID (ADDED AS PRESERVATIVES). CONTAINS LESS THAN 2% OF EACH OF THE FOLLOWING: CORN SYRUP, YEAST, SALT, PALM OIL WITH SOYA LECITHIN, MICROCRYSTALLINE CELLULOSE, TAPIOCA DEXTRIN, SODIUM STEAROYL LACTYLATE, SOYBEAN OIL, ARTIFICIAL FLAVOR, BAKING POWDER [SODIUM ACID PYROPHOSPHATE, SODIUM BICARBONATE, CORN STARCH, MONOCALCIUM PHOSPHATE], CASEIN (MILK), CINNAMON, NON-FAT MILK AND WHEY SOLIDS, AGAR, FOOD STARCH-MODIFIED, DEXTROSE, EGG WHITES, ARTIFICIAL COLOR, ASCORBIC ACID, CALCIUM PROPIONATE AND POTASSIUM SORBATE (PRESERVATIVES).