Which food has less impact on blood sugar?

ROMAINE AND ICEBERG LETTUCE, WHITE CHICKEN MEAT (WITH WATER, SALT SPICES, DEHYDRATED ONION, DEHYDRATED GARLIC), EGGS (WITH WATER, CITRIC ACID. MONOSODIUM PHOSPHATE. POTASSIUM SORBATE [PRESERVATIVE]). TOMATOES. BLUE CHEESE (PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES, POWDERED CELLULOSE [TO PREVENT CAKING]. NATAMYCIN (PRESERVATIVE), BACON (CURED WITH WATER, SALT, SMOKE FLAVORING, SODIUM PHOSPHATE, SODIUM ERYTHORBATE. SODIUM NITRITE: MAY CONTAIN SUGAR, BROWN SUGAR). RANCH DRESSING: SOYBEAN OIL. WATER, BUTTERMILK, SOUR CREAM (CULTURED MILK AND CREAM, NONFAT DRY MILK, MODIFIED CORN STARCH, GUAR GUM, LOCUST BEAN GUM, CARRAGEENAN, ENZYMES), EGG YOLK. DISTILLED VINEGAR, SALT, EGG WHITES MODIFIED CORNSTARCH. MONOSODIUM GLUTAMATE, SUGAR, GARLIC, GLUCONO DELTA LACTONE. NATURAL FLAVOR, DEHYDRATED ONION. POTASSIUM SORBATE AND SODIUM BENZOATE (PRESERVATIVES), XANTHAN GUM, SPICE, WHEY PROTEIN CONCENTRATE, SORBIC ACID, CITRIC ACID, CALCIUM DISODIUM EDTA (PRESERVATIVE), CROUTONS: WHEAT FLOUR, CANOLA AND/OR OLIVE OIL, SALT, WHEY, YEAST, SUGAR, ROMANO CHEESE (MILK, CHEESE CULTURE, SALT, ENZYMES), PARSLEY, SPICES, DEHYDRATED ONION, DEHYDRATED GARLIC, CITRIC ACID, DISODIUM INOSINATE AND DISODIUM GUANYLATE BETA-CAROTENE FOR COLOR, NIACIN, ASCORBIC ACID, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID.