Which food has less impact on blood sugar?

WHEAT FLOUR 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, CALCIUM PROPIONATE, FUMARIC ACID, GUAR GUM, XANTHAN GUM, SODIUM METABISULFITE, MICROCRYSTALLINE CELLULOSE, DICALCIUM PHOSPHATE), COOKED WHITE CHICKEN MEAT (CHICKEN BREAST WITH RIB MEAT [CHICKEN BREAST WITH RIB MEAT, CONTAINS UP TO 2% RETAINED WATER], MARINADE SPICE MIX [SEA SALT, STARCH BLEND {RICE STARCH, RICE FLOUR}, WHITE DISTILLED VINEGAR {WHITE DISTILLED VINEGAR REDUCED WITH WATER TO 5% ACIDITY}, SODIUM TRIPOLYPHOSPHATE {PRESERVATIVE}], WATER), CAESAR DRESSING (SOYBEAN OIL, WATER, PARMESAN AND ROMANO CHEESE [PASTEURIZED COW'S MILK, CHEESE CULTURES, SALT, ENZYMES], DISTILLED VINEGAR, SUGAR, EGG YOLKS, SALT, CONTAINS LESS THAN 2% OF SPICES [INCLUDES MUSTARD], DEHYDRATED GARLIC, CITRIC ACID, XANTHAN GUM, DEHYDRATED ONION, LEMON JUICE CONCENTRATE, OLEORESIN TURMERIC [COLOR], NATAMYCIN AS AN ANTI-MYCOTIC AGENT), SPINACH, CREAM CHEESE (PASTEURIZED MILK AND CREAM, WHEY PROTEIN CONCENTRATE, CONTAINS LESS THAN 2% OF SALT, CAROB BEAN GUM, GUAR GUM, NATAMYCIN [A NATURAL MOLD INHIBITOR], VITAMIN A PALMITATE, CHEESE CULTURE), PARMESAN CHEESE (PARMESAN CHEESE [PASTEURIZED PART SKIM MILK, CHEESE CULTURES, SALT, ENZYMES], POWDERED CELLULOSE [TO PREVENT CAKING]).