Which food has less impact on blood sugar?

MULTIGRAIN SANDWICH ROLL (ENRICHED WHEAT FLOUR [WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMIN MONONITRATE, RIBOFLAVIN, FOLIC ACID], WATER, GRAIN BLEND [FERMENTED WHEAT FLOUR, WHEAT GRAIN, RYE GRAIN, OAT GRAIN, FLAX SEEDS, RYE SOURDOUGH, MILLET, TEFF SEEDS, SALT], CRACKED RYE, WHEAT BRAN, WHEAT GLUTEN, YEAST, SUGAR, SALT, FERMENTED RYE FLOUR, VEGETABLE OIL [CANOLA OIL OR SOYBEAN OIL], DOUGH CONDITIONERS [CALCIUM SULFATE, ASCORBIC ACID, ENZYMES], WHEAT STARCH, LACTIC ACID), EVERROAST OVEN ROASTED CHICKEN BREAST BONELESS SKINLESS (CHICKEN BREAST, WATER, LESS THAN 1.5% OF SALT, MALTODEXTRIN, SUGAR, SODIUM PHOSPHATE, DEXTROSE, FLAVOR, CHICKEN BROTH. COATED WITH: BROWN SUGAR, CARROT, ONION, MALTODEXTRIN, SEA SALT, DEXTROSE, SPICE, GARLIC, CELERY, 2% OR LESS OF CARROT POWDER, CANOLA OIL, NATURAL FLAVOR, CHICKEN BROTH, SALT, CARAMEL COLOR, FLAVORING), AMERICAN CHEESE (AMERICAN CHEESE [MILK, SALT, CHEESE CULTURES, ENZYMES], WATER, CREAM, SODIUM CITRATE, SALT, SORBIC ACID [ADDED AS A PRESERVATIVE], PAPRIKA AND ANNATTO [IF COLORED], SOY LECITHIN [NON-STICKING AGENT]), LETTUCE, PRECOOKED BACON NATURAL SMOKED FLAVORING ADDED (CURED WITH: WATER, SALT, SUGAR, NATURAL SMOKE FLAVORING, SODIUM PHOSPHATES, SODIUM ERYTHORBATE, SODIUM NITRATE).