Which food has less impact on blood sugar?

TOMATOES (WATER, TOMATO PASTE), ENRICHED FLOUR (WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), CHEESES (LOW MOISTURE PART SKIM MOZZARELLA AND PARMESAN CHEESE [CULTURED PASTEURIZED PART SKIM MILK, SALT, ENZYMES], PROVOLONE CHEESE [CULTURED PASTEURIZED MILK, SALT, ENZYMES]), BACON WITH SMOKE FLAVORING ADDED (CURED WITH WATER, SALT, SUGAR, SMOKE FLAVORING, SODIUM PHOSPHATES, SODIUM ERYTHORBATE, SODIUM NITRITE), PRECOOKED BACON ENDS AND PIECES (BACON [CURED WITH WATER, SUGAR, SALT, SODIUM PHOSPHATE, NATURAL FLAVOR], SODIUM ERYTHORBATE, SODIUM NITRITE), CANADIAN STYLE BACON WATER ADDED CHUNKED AND FORMED FROM PORK SIRLOIN HIPS (CURED WITH WATER, SALT, POTASSIUM LACTATE, SUGAR, SODIUM PHOSPHATES, SMOKE FLAVORING, SODIUM DIACETATE, SODIUM ERYTHORBATE, SODIUM NITRITE), WATER, PALM OIL, CONTAINS 2% OR LESS OF: VEGETABLE OIL (SOYBEAN AND/OR CANOLA OIL), SUGAR, SALT, YEAST, MODIFIED FOOD STARCH, SPICE, MALTODEXTRIN, DRIED GARLIC, HYDROLYZED SOY AND CORN PROTEIN, PAPRIKA, DRIED ONION, WHEAT STARCH, L-CYSTEINE HYDROCHLORIDE, AMMONIUM SULFATE, NATURAL FLAVOR, SOY LECITHIN.