Which food has less impact on blood sugar?

WG BREAKFAST BUN: WHITE WHOLE WHEAT FLOUR, ENRICHED BLEACHED WHEAT FLOUR (WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), WATER, PALM OIL, SUGAR, CONTAINS 2% OR LESS OF: CORNSTARCH, YEAST, LEAVENING (SODIUM BICARBONATE, SODIUM ACID PYROPHOSPHATE), SOY FLOUR, WHEY (MILK), SALT, SOY PROTEIN CONCENTRATE, GUAR GUM, SODIUM STEAROYL LACTYLATE, SOY LECITHIN, ASCORBIC ACID, COLORED WITH TUMERIC AND ANNATTO, UNBLEACHED ENRICHED FLOUR (WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), ENZYMES, CALCIUM PROPIONATE (TO RETARD SPOILAGE), WHEAT FLOUR, CELLULOSE GUM, XANTHAN GUM, LACTALBUMIN, MAGNESIUM PHOSPHATE, DICALCIUM PHOSPHATE, FERROUS SUFATE, VITAMIN E, NIACINAMIDE, VITAMIN A, PYRIDOXINE, THIAMIN, RIBOFLAVIN, FOLIC ACID, VITAMIN B12, NATURAL FLAVOR, CALCIUM CARBONATE, AGAR, DEXTROSE, VEGETABLE MONOGLYCERIDES, WHEAT GLUTEN, MONO-AND DIGLYCERIDES, ANTIOXIDANTS (TOCOPHEROLS, ASCORBIC ACID, CITRIC ACID), ASCORBIC ACID, CINNAMON..SNACKABLES, WG, ALPHABET: WHOLE WHEAT FLOUR, ENRICHED WHEAT FLOUR [WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID]), SUGAR, CANOLA OIL, NATURAL FLAVOR, SALT, BAKING SODA, SUNFLOWER LECITHIN.APPLESAUCE: APPLES, WATER, ASCORBIC ACID (TO MAINTAIN COLOR)VERY BERRY JUICE: 100% FRUIT JUICE (WATER SUFFICIENT TO RECONSTITUTE APPLE, PEAR, RASPBERRY AND STRAWBERRY JUICE CONCENTRATES), NATURAL FLAVORS AND CITRIC ACID.