44 foods by where their calories come from. Tap any food.
Asked for on Hacker News: “What I wish someone would make is the ‘periodic table of macro nutrients’ that positions foods along multiple dimensions at once.” See the comment
Data: USDA FoodData Central (SR Legacy), per 100 g. Calorie shares use 4 kcal/g for protein and carbs and 9 kcal/g for fat. Not medical advice.