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), LOWER SODIUM GOLDEN ROASTED CHICKEN BREAST (CHICKEN BREAST, WATER, LESS THAN 2% SALT, SUGAR, SODIUM PHOSPHATE, DEXTROSE, BROWNED IN OIL), CAESAR DRESSING (CANOLA OIL, WATER, ROMANO CHEESE [MILK, CULTURE, SALT, ENZYMES], EGG YOLK, LESS THAN 2% OF DISTILLED VINEGAR, SALT, DRIED GARLIC, DIJON MUSTARD [DISTILLED VINEGAR, WATER, MUSTARD SEED, SALT, WHITE WINE, CITRIC ACID, TURMERIC, TARTARIC ACID, SPICES], SUGAR, LEMON JUICE CONCENTRATE, ANCHOVY PASTE [ANCHOVIES, SALT, WATER], MUSTARD FLOUR, SPICE, XANTHAN GUM), LETTUCE, CREAM CHEESE (PASTEURIZED CULTURED MILK AND CREAM, SALT, STABILIZER [GUAR GUM AND CAROB BEAN GUM]), FULLY COOKED BACON STRIPS SMOKE FLAVOR ADDED (CURED WITH WATER, SALT, SUGAR, SMOKE FLAVORING, SODIUM PHOSPHATE, SODIUM ERYTHORBATE, SODIUM NITRITE), ROMANO CHEESE (ROMANO CHEESE [PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES], POWDERED CELLULOSE [TO PREVENT CAKING]).