Which food has less impact on blood sugar?

WHOLE GRAIN BREAD (WATER, WHOLE WHEAT FLOUR, UNBLEACHED ENRICHED WHEAT FLOUR [FLOUR, BARLEYMALT, NIACIN {VITAMIN B3}, IRON, THIAMIN MONONITRATE {VITAMIN B1}, RIBOFLAVIN {VITAMIN B2}, FOLICACID {VITAMIN B9}], SUGAR, YEAST, WHEAT GLUTEN, CONTAINS 2% OR LESS OF THE FOLLOWING: SOYBEAN OIL, SALT, DOUGH CONDITIONER [MONO- AND DIGLYCERIDES, SODIUM STEAROYL LACTYLATE, ASCORBIC ACID], CALCIUM PROPIONATE AND SORBIC ACID [TO RETAIN FRESHNESS], YEAST NUTRIENTS [CITRIC ACID, AMMONIUMSULFATE], HYDROGENATED COTTONSEED OIL, SOY LECITHIN), TURKEY HAM (TURKEY THIGH, WATER, ISOLATEDSOY PROTEIN, SALT, SUGAR, LESS THAN 2% POTASSIUM LACTATE, SODIUM PHOSPHATE, POTASSIUM ACETATE, SMOKE FLAVORING, SODIUM NITRITE, SODIUM ERYTHORBATE), CHICKEN BREAST (CHICKEN BREAST, WATER, SALT, LESS THAN 2% MODIFIED FOOD STARCH, POTASSIUM LACTATE, SODIUM PHOSPHATES, POTASSIUMACETATE, NATURAL FLAVORING), LOW-MOISTURE PART-SKIM MOZZARELLA CHEESE (CULTURED PART SKIM MILK, SALT, ENZYMES, SORBIC ACID [PRESERVATIVE], SUNFLOWER LECITHIN [ANTI-STICKING AGENT]), PASTEURIZEDPROCESS YELLOW AMERICAN CHEESE (CULTURED SKIM MILK AND MILK, POTASSIUM CITRATE, SODIUM CITRATE, PAPRIKA AND ANNATTO [COLOR], SALT, ENZYMES, SORBIC ACID [PRESERVATIVE], SOY LECITHIN [ANTISTICKING AGENT]).