Vitamins are primarily divided into two categories: fat-soluble vitamins and water-soluble vitamins. Fat-soluble vitamins include Vitamin A, Vitamin D, Vitamin E, and Vitamin K, while water-soluble vitamins mainly consist of the B vitamins and Vitamin C. Many vegetables, fruits, grains, eggs, legumes, and meats contain these essential nutrients.

1. **Vegetables**: Vegetables like spinach, tomatoes, pea shoots, eggplants, carrots, and sweet potatoes are rich in Vitamin A. Chinese cabbage and celery are good sources of Vitamin B. Fresh leafy greens typically contain abundant Vitamin C, Vitamin K (important for blood clotting), and Niacin (Vitamin PP).

2. **Fruits**: Acidic fruits such as oranges, tangerines, lemons, and hawthorns are high in Vitamin C.

3. **Grains**: Whole grains like brown rice and whole wheat are rich in Riboflavin (Vitamin B2). The bran, germ, and sprouts of grains and cereals contain large amounts of various B vitamins.

4. **Eggs**: Eggs from chickens, geese, and quails are rich in multiple vitamins, including Thiamine (Vitamin B1), Riboflavin (Vitamin B2), and Niacin (Vitamin PP).

5. **Legumes**: Beans such as soybeans, broad beans, and mung beans are rich in Thiamine (Vitamin B1) and Riboflavin (Vitamin B2).

6. **Meats**: Pork, beef, and organ meats like liver and kidneys are rich in B vitamins, Niacin (Vitamin PP), and Cobalamin (Vitamin B12), which is effective against pernicious anemia.

This comprehensive list highlights the variety of foods that provide essential vitamins, supporting a balanced diet for optimal health.