Which food has less impact on blood sugar?

ROMAINE LETTUCE, DICED WHITE MEAT CHICKEN (CHICKEN BREAST MEAT WITH RIB MEAT, WATER, CULTURED SUGAR, CULTURED VINEGAR, POTATO STARCH, SEA SALT, NATURAL FLAVORINGS), CAESAR DRESSING (CANOLA OIL, WATER, PARMESAN CHEESE [PART SKIM MILK, CULTURE, SALT, ENZYMES], EGG YOLK, MUSTARD [DISTILLED VINEGAR, WATER, MUSTARD SEED], LESS THAN 2% OF ANCHOVY PASTE [ANCHOVIES, SALT, WATER], DRIED GARLIC, DISTILLED VINEGAR, LEMON JUICE CONCENTRATE, SUGAR, SALT, SPICE, XANTHAN GUM, GROUND MUSTARD), PARMESAN CHEESE (PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES, POTATO STARCH ADDED TO PREVENT CAKING), SEASONED CROUTONS (ENRICHED FLOUR [WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMIN MONONITRATE, RIBOFLAVIN, FOLIC ACID], CANOLA AND/OR SUNFLOWER OIL [WITH ROSEMARY EXTRACT AND ASCORBIC ACID {TO PRESERVE FRESHNESS}], SALT, SUGAR, YEAST, 2% OR LESS OF MALTODEXTRIN, GARLIC POWDER, WHEY, PARMESAN CHEESE [PART-SKIM MILK, CHEESE CULTURES, SALT, ENZYMES], ONION POWDER, SPICES, DEHYDRATED PARSLEY, TORULA YEAST, CULTURED WHEY, CITRIC ACID, NATURAL FLAVORS, CREAM, EXTRACTIVE OF ANNATTO [COLOR], TURMERIC [COLOR], ENZYMES).