foods that have a variety of nutrients without an excessive amounts of energy?

Answer 1

In general, you would want to look at foods that don't have much in the way of calories, fats, proteins, or carbohydrates (all of which can boost your energy - especially proteins and carbs). The bright or deep colored vegetables are very high in nutrients, but lower in calories. Foods that are touted as healthy AND have higher fiber content are also going to fall in this category because they don't give you much energy - more like bulk and nutrients without as many calories. Vegetables are better than fruits, for example, because although both are usually colorful and have fiber, fruits usually have more sugars and can therefore provide more energy. Here are some examples that fall into those categories:
Black raspberries
Strawberries
Blueberries
Green Leafy Vegetables (spinach, kale, turnip or mustard greens, darker lettuces like romaine or red leaf, etc)
Tomatoes
Cabbage family (Brussels sprouts, broccoli, green or red/purple cabbage, cauliflower, etc)

Answer 2

Vitamin and Mineral Supplements including Fish Oil Gels.

Answer 3

Eggs. Are a complete source of nutrition (except for vitamin C).

Answer 4

Nutri-Grain bars, pizza, string cheese, vegetables...