Which food has less impact on blood sugar?

WHITE SUB BREAD (ENRICHED WHEAT FLOUR [WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMIN MONONITRATE, RIBOFLAVIN, FOLIC ACID], WATER, SUGAR, YEAST, WHEAT GLUTEN, SALT, MALTED BARLEY EXTRACT, CALCIUM PROPIONATE [PRESERVATIVES], DOUGH CONDITIONERS [DIACETYL TARTARIC ACID ESTERS OF MONO AND DIGLYCERIDES, SODIUM STEAROYL LACTYLATE, ASCORBIC ACID, ENZYMES, L-CYSTEINE, AZODICARBONAMIDE], MALTED BARLEY FLOUR), GIARDINIERA SPREAD (WATER, GREEN BELL PEPPER, ONION, RED BELL PEPPER, CARROT, CELERY, DISTILLED VINEGAR, MODIFIED CORN STARCH, YELLOW BELL PEPPER, JALAPENO PEPPER, SOYBEAN OIL, EXTRA VIRGIN OLIVE OIL, SALT, GARLIC, SPICES, BLACK PEPPER, SODIUM BENZOATE, POTASSIUM SORBATE), PEPPERONI (PORK, BEEF, SALT, DEXTROSE, SPICES, LACTIC ACID, PAPRIKA, GARLIC, SODIUM NITRITE, BHA, BHT, CITRIC ACID), SALAMI (PORK, BEEF, SALT, DEXTROSE, SPICES, LACTIC ACID, SODIUM ASCORBATE, SODIUM NITRITE, GARLIC, BHA, BHT, CITRIC ACID), HAM WITH NATURAL JUICES (HAM CURED WITH WATER, CONTAINS 2% OR LESS OF SUGAR, SALT, POTASSIUM LACTATE, SODIUM DIACETATE, SODIUM ERYTHORBATE, SODIUM NITRITE, SODIUM PHOSPHATE), PROVOLONE CHEESE (PASTEURIZED MILK, CHEESE CULTURES, SALT AND ENZYMES), GREEN LEAF LETTUCE.