Which food has less impact on blood sugar?

WRAP: CHICKEN SALAD: WHITE MEAT CHICKEN, MAYONNAISE (SOYBEAN OIL, EGG YOLKS, VINEGAR, HIGH FRUCTOSE, CORN SYRUP, WATER, SALT, SPICE, CALCIUM, DISODIUM EDTA), CREAMY CAESAR DRESSING [CANOLA AND/OR SOYBEAN OIL, ROMANO CHEESE (PASTEURIZED MILK, CHEESE CULTURES), NONFAT DRY MILK, GUAR GUM, MUSTARD FLAVOR, LEMON JUICE, LACTIC ACID, WORCESTERSHIRE, SAUCE, SOY SAUCE, NATURAL FLAVOR, ANCHOVY POWDER, GARLIC JUICE, MUSTARD FLAVOR, POTASSIUM SORBATE AND SODIUM BENZOATE], CELERY, BREAD CRUMBS (BLEACHED WHEAT FLOUR, DEXTROSE AND YEAST), BLACK PEPPER, ONTON, XANTHAN GUM, GARLIC POWDER AND GARLIC SALT. 12"" WHITE WRAP: ENRICHED WHEAT FLOUR (FLOUR, NIACIN, REDUCED IRON, TRICALMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), WATER, INTERESTERIFIED SOYBEAN AND COTTONSEED OIL, SALT, BAKING POWDER, (CALCIUM ACID PHOSPHATE, BICARBONATE OF SODA, CORNSTARCH), CULTURED WHEAT STARCH. LETTUCE: FRESH LETTUCE. BACON: BACON (CURED WITH WATER, SALT, SUGAR, SODIUM ERYTHORBATE, SODIUM NITRITE. MAY ALSO CONTAIN DEXTROSE, FLAVORING, HONEY, POTASSIUM CHLORIDE, POTASSIUM LACTATE, SMOKE FLAVORING, SODIUM DIACETATE, SODIUM PHOSPHATE). PARMESAN CHEESE: (PASTEURIZED PART SKIM MILK, SALT, LESS THAN 2% OF ENZYMES CHEESE CULTURE, CELLULOSE POWDER (TO PREVENT CAKING), POTASSIUM SORBATE (TO PROTECT FLAVOR), AGED 6 MONTHS. CREAM CHEESE: PASTEURIZED CREAM AND SKIM MILK, MODIFIED FOOD STARCH, SODIUM CASEINATE (MILK), SALT, SODIUM STEAROYL LACTYLE, SODIUM PHOSPHATE, LOCUST BEAN GUM, GUAR GUM, MALIC ACID, POTASSIUM SORBATE, NATURAL AND ARTIFICIAL FLAVORS.