Which food has less impact on blood sugar?

ROMAINE LETTUCE, FULLY COOKED GRILLED SALMON (PINK AND/OR KETA SALMON, WATER, CONTAINS 2% OR LESS OF: SEA SALT, SUGAR, SODIUM PHOSPHATES, DEHYDRATED GARLIC AND ONION, SPICES, PAPRIKA, XANTHAN GUM, NATURAL HAVORS, SPICE EXTRACTIVES), CAESAR DRESSING (SOYBEAN OIL, WATER, PARMESAN CHEESE [PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES, ANTI-CAKING AGENT], CORN VINEGAR, EGGS, CORN SYRUP, SALT, SUGAR, CONTAINS LESS THAN 2% OF CURED ANCHOVIES, SPICES, CITRIC ACID, DEHYDRATED GARLIC, LEMON JUICE CONCENTRATE, NATURAL FLAVOR, XANTHAN GUM, DEHYDRATED ONION, DEFATTED SOY FLOUR, SODIUM BENZOATE [A 15% PRESERVATIVE], DISTILLED VINEGAR, CALCIUM DISODIUM EDTA ADDED TO PROTECT FLAVOR, CARAMEL COLOR, EXTRACTIVES OF TURMERIC), PARMESAN CHEESE (PARMESAN CHEESE [PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES], POWDERED CELLULOSE [TO PREVENT CAKING]), CROUTONS (ENRICHED FLOUR [WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACD], CANOLA AND/OR SUNFLOWER OIL [WITH ROSEMARY EXTRACT AND ASCORBIC ACID {TO PRESERVE FRESHNESS}], WHEY, SALT, YEAST, SUGAR, 2% OR LESS OF DEHYDRATED PARSLEY, GARLIC POWDER, NATURAL AND ARTIFICIAL FLAVOR, PARMESAN CHEESE AND ENZYME MODIFIED CHEESE [PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES], CULTURED NONFAT MILK, ANNATTO [COLOR], EXTRACTIVES OF TURMERIC AND PAPRIKA [COLOR], ENZYMES), LEMON., ,