Which food has less impact on blood sugar?

ROMAINE LETTUCE, SEASONED CHICKEN RAISED WITHOUT ANTIBIOTICS (CHICKEN [BONELESS SKINLESS CHICKEN BREAST WITH RIB MEAT, WATER, POTATO STARCH, VINEGAR, SALT], SOYBEAN OIL, SPICES, DEHYDRATED GARLIC, DEHYDRATED ONION, SEA SALT), CAESAR DRESSING (VEGETABLE OIL [SOYBEAN AND/OR CANOLA OIL], WATER, PARMESAN CHEESE [PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES], ROMANO CHEESE [ROMANO CHEESE {CULTURED COW'S MILK, SALT, ENZYMES}, NATURAL FLAVOR, CELLULOSE, SALT], EGG YOLK, RED WINE VINEGAR, GARLIC, DIJON MUSTARD [DISTILLED VINEGAR, WATER, MUSTARD SEED, SALT, WHITE WINE, SUGAR, SPICES, TURMERIC], SALT, NATURAL FLAVORS, ANCHOVY PASTE [ANCHOVIES IN SALT, OLIVE OIL, ACETIC ACID], DISTILLED VINEGAR, LEMON JUICE CONCENTRATE, SUGAR, SPICES, XANTHAN GUM), TOMATOES, PARMESAN CHEESE (PASTEURIZED COW'S MILK, CHEESE CULTURE, SALT OR SEA SALT, ENZYMES, CELLULOSE POWDER [TO PREVENT CAKING] OR NATAMYCIN [TO PROTECT FLAVOR]), MULTI GRAIN CROUTONS (ENRICHED WHEAT FLOUR [WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID], CANOLA AND/OR OLIVE OIL, SALT, SUGAR, RYE MEAL, WHEAT BRAN, YEAST, CARAMEL COLOR, DEHYDRATED GARLIC, CORN MEAL, SPICES, CARAWAY SEEDS, NATURAL BUTTER FLAVOR [A MILK INGREDIENT], CITRIC ACID, ASCORBIC ACID).