Which food has less impact on blood sugar?

DARK RYE BREAD [ENRICHED UNBLEACHED FLOUR (WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), WATER, MEDIUM RYE FLOUR, SUGAR, YEAST, CONTAINS 2% OR LESS OF THE FOLLOWING: GROUND CARAWAY SEED, SOYBEAN OIL, CARAMEL COLOR (CONTAINS SULFITES), SALT, GLUTEN, POTATO FLAKES, FUMARIC ACID, ACETIC ACID, SPICES, DOUGH CONDITIONERS (MONOGLYCERIDES, SODIUM STEAROYL LACTYLATE, ASCORBIC ACID, CALCIUM SULFATE, ENZYMES), MONOCALCIUM PHOSPHATE, CALCIUM PROPIONATE (PRESERVATIVE)], TURKEY PASTRAMI (TURKEY, MECHANICALLY SEPARATED TURKEY, SEASONING (SUGAR, SALT, GARLIC POWDER, NATURAL FLAVORS, OLEORESIN PAPRIKA (COLOR), GARLIC OIL), WATER, ISOLATED OAT PRODUCT, CONTAINS 2% OR LESS CRACKED PEPPER, NATURAL SMOKE FLAVORING, SALT, POTASSIUM LACTATE, SODIUM DIACETATE, SODIUM PHOSPHATE, SODIUM ERYTHORBATE, SODIUM NITRITE, ROSEMARY EXTRACT], TURKEY BREAST WITH WHITE TURKEY AND BROTH [TURKEY BREAST WITH WHITE TURKEY, WATER, CONTAINS 2% OR LESS POTASSIUM LACTATE, MODIFIED FOOD STARCH, DEXTROSE, SALT, SODIUM PHOSPHATE, SODIUM DIACETATE, FLAVORING], SWISS CHEESE [PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES], DELI MUSTARD [VINEGAR, WATER, MUSTARD SEEDS, SALT AND TURMERIC].