Which food has less impact on blood sugar?

SPONGE CAKE (SUGAR, CAKE FLOUR [BLEACHED WHEAT FLOUR], SUGARED EGG YOLKS [EGG YOLKS, SUGAR], WHOLE EGGS, CAKE SHORTENING [SOYBEAN OIL, GLYCERYL-LACTO ESTERS OF FATTY ACIDS, VEGETABLE MONO- & DIGLYCERIDES, TBHQ {PROTECTS FLAVOR}], WHOLE MILK [MILK, VITAMIN A PALMITATE, VITAMIN D3], PAN SPRAY [SOY OIL, PETROLATUM. CONTAINS 2% OR LESS OF SOY LECITHIN, MONO- DIGLYCERIDES, BHT], BAKING POWDER [CORNSTARCH, SODIUM BICARBONATE, SODIUM ALUMINIUM SULFATE, MONOCALCIUM PHOSPHATE], SALT, VANILLA FLAVOR [WATER, PROPYLENE GLYCOL, ALCOHOL, ARTIFICIAL FLAVORS, CITRIC ACID]), CREAM FILLING (HEAVY WHIPPING CREAM [CREAM {MILK}, CARRAGEENAN], CREAM CHEESE [PASTEURIZED MILK & CREAM, CHEESE CULTURE, SALT, CAROB BEAN GUM], SUGAR, VANILLA EXTRACT [VANILLA BEAN EXTRACTIVES, CORN SYRUP, ETHYL ALCOHOL, WATER]), STRAWBERRY SYRUP (STRAWBERRY PUREE [STRAWBERRY 90%, SUGAR], SUGAR, WATER, STRAWBERRY GELATIN [SUGAR, CORN SYRUP, GELATIN, ADIPIC ACID, SODIUM PHOSPHATE, SODIUM CITRATE, ARTIFICIAL FLAVOR, ASCORBIC ACID {VITAMIN C}, RED 40, RED 40 LAKE], STRAWBERRY PASTE [SUCROSE, GLUCOSE SYRUP, CONCENTRATED STRAWBERRY PUREE, THICKENING AGENT {MODIFIED WAXY MAIZE STARCH}, COLORANT {CONCENTRATED PURPLE CARROT JUICE, BETA-CAROTENE}, ARTIFICIAL FLAVOR, CONCENTRATED STRAWBERRY JUICE, ACIDULANT {CITRIC ACID}, POTASSIUM SORBATE, ANTIFOAMING AGENT {MONO- & DIGLYCERIDES}], MODIFIED FOOD STARCH), WHITE BUTTERCREAM (FONDANT SUGAR [SUCROSE, CORN STARCH], SHORTENING [PALM OIL, MONO- & DIGLYCERIDES, POLYSORBATE 60, CITRIC ACID {PRESERVATIVE}], SALTED BUTTER [PASTEURIZED SWEET CREAM {MILK}, SALT], WATER, INVERT SYRUP, SALT, VANILLA FLAVOR [WATER, PROPYLENE GLYCOL, ALCOHOL, ARTIFICIAL FLAVORS, CITRIC ACID]), STRAWBERRY FILLING (HIGH FRUCTOSE CORN SYRUP, WATER, STRAWBERRIES, CORN SYRUP, MODIFIED FOOD STARCH. CONTAINS 2% OR LESS OF: CELLULOSE GEL, CELLULOSE GUM, CITRIC ACID, COLOR ADDED [RED 40, YELLOW 6], NATURAL & ARTIFICIAL FLAVOR, POTASSIUM SORBATE, SALT, SODIUM BENZOATE, SODIUM CITRATE), WHITE CHOCOLATE CURLS (SUGAR, COCOA BUTTER, WHOLE MILK POWDER, WHEY POWDER [MILK], LACTOSE [MILK], SOY LECITHIN [EMULSIFIER], NATURAL VANILLA, WHITE CHOCOLATE DISC (SUGAR, COCOA BUTTER, WHOLE MILK POWDER, WHEY POWDER [MILK], EMULSIFIERS [SOY LECITHIN], POLYGLYCEROL POLYRICINOLEATE, NATURAL VANILLA, HYDROGENATED PALM KERNEL OIL, BLUE 2, RED 40, YELLOW 6, BLUE 1, TITANIUM DIOXIDE, SKIMMED MILK POWDER, MONOGLYCERIDES, ARTIFICIAL FLAVOR).