Which food has less impact on blood sugar?

RUSTIC WHITE BREAD {ENRICHED WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID], WATER, SUGAR, CONTAINS LESS THAN 2% OF ENZYMES, ASCORBIC ACID, AZODICARBONAMIDE [MONO AND DIGLYCERIDES OF FATTY ACIDS], ANTI-CAKING AGENT: [CALCIUM CARBONATE], CALCIUM PROPIONATE, PHOSPHORIC ACID [PRESERVATIVE], PROPIONIC ACID [PRESERVATIVE], SALT, SOYBEAN OIL, YEAST), COOKED HOT HAM WATER ADDED (HAM CURED WITH WATER, SALT, CONTAINS 2% OR LESS OF DEXTROSE, FLAVORINGS, SODIUM ERYTHORBATE, SODIUM NITRATE, SODIUM PHOSPHATE), PEPPERONI (PORK, SALT, CONTAINS 2% OR LESS OF BEEF, DEXTROSE, FLAVORINGS, LACTIC ACID STARTER CULTURE, OLEORESIN OF PAPRIKA, SODIUM NITRITE, SPICES, VITAMIN C [SODIUM ASCORBATE], BHA, BHT, CITRIC ACID), HARD SALAMI (PORK, SALT, DEXTROSE, CONTAINS 2% OR LESS OF BEEF, FLAVORINGS, LACTIC ACID STARTER CULTURE, NATURAL SMOKE FLAVOR, SODIUM NITRITE, SPICES, VITAMIN C [SODIUM ASCORBATE], BHA, BHT, CITRIC ACID), PROVOLONE (PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES), TOMATO, BANANA PEPPERS (HOT PEPPERS, WATER, VINEGAR, SALT, CALCIUM CHLORIDE, 1/10 OF 1% BENZOATE OF SODA [PRESERVATIVE], FD&C YELLOW NO. 5), GREEN LEAF LETTUCE.