Which food has less impact on blood sugar?

WHEAT TORTILLA (WHOLE WHEAT FLOUR, ENRICHED BLEACHED FLOUR [WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID], WATER, VEGETABLE SHORTENING [SOYBEAN OIL, VEGETABLE MONO & DIGLYCERIDES, TOCOPHEROLS (VITAMIN E) AND VITAMIN C PALMITATE (AS ANTIOXIDANTS)]. CONTAINS LESS THAN 2% OF EACH OF THE FOLLOWING: SALT, MONOGLYCERIDES, LEAVENING [SODIUM BICARBONATE, SODIUM ACID PYROPHOSPHATE, CORN STARCH, MONOCALCIUM PHOSPHATE], POTASSIUM SORBATE, FUMARIC ACID, CALCIUM PROPIONATE, GUAR GUM, XANTHAN GUM, SODIUM METABISULFITE, MICROCRYSTALLINE CELLULOSE, DICALCIUM PHOSPHATE), OVEN ROASTED TURKEY BREAST (TURKEY BREAST MEAT, TURKEY BROTH, SALT, SODIUM PHOSPHATE, COATED WITH SALT, SPICE, PAPRIKA, PARSLEY, TURMERIC), SWISS CHEESE (PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES), DRIED CRANBERRIES (CRANBERRIES, SUGAR, SUNFLOWER OIL [EXPELLER PRESSED]), LETTUCE, CREAM CHEESE (PASTEURIZED CULTURED MILK AND CREAM, SALT, STABILIZERS [GUAR GUM AND CAROB BEAN GUM]).