Which food has less impact on blood sugar?

HAM (CURED WITH WATER, DEXTROSE, SALT, CONTAINS 2% OR LESS OF SODIUM LACTATE, POTASSIUM LACTATE, SODIUM PHOSPHATES, SODIUM ERYTHORBATE, SODIUM DIACETATE, SODIUM NITRITE), ITALIAN ROLL (ENRICHED BLEACHED WHEAT FLOUR [WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, FERROUS SULFATE, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID], WATER, CONTAINS 2% OR LESS OF EACH OF THE FOLLOWING: YEAST, SALT, SOYBEAN OIL, WHEAT GLUTEN, CALCIUM SULFATE, WHEAT STARCH, SUGAR, DEXTROSE, CALCIUM PROPIONATE AND PHOSPHORIC ACID [FOR FRESHNESS], MONO- AND DIGLYCERIDES, CALCIUM STEAROYL LACTYLATE [CSL], CITRIC ACID, COATED SORBIC ACID [WITH PARTIALLY HYDROGENATED SOYBEAN OIL], GUAR GUM, MALT, WHEAT FLOUR, ENZYMES, ETHOXYLATED MONO- AND DIGLYCERIDES, POTASSIUM IODATE, ASCORBIC ACID, PROPIONIC ACID, AZODICARBONAMIDE [ADA], L-CYSTEINE), MILD CHEDDAR CHEESE (PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES, ANNATTO [VEGETABLE COLOR], NATAMYCIN [A NATURAL MOLD INHIBITOR]), GREEN LEAF LETTUCE, MAYONNAISE (SOYBEAN OIL, WATER, EGGS, DISTILLED VINEGAR, CONTAINS LESS THAN 2% OF CORN SYRUP, SALT, SPICE, LEMON JUICE CONCENTRATE, CALCIUM DISODIUM EDTA ADDED TO PROTECT FLAVOR), MUSTARD (WATER, DISTILLED VINEGAR, MUSTARD SEED, SALT, TURMERIC, SPICES).