When it was just me doing the shopping:
Nuts: Almonds and walnuts, mostly. PB for oatmeal or toast.
Fruit: Berries, apples, bananas (when it was only me because DBF's allergic)...whatever I felt like, looked good and could afford.
Dairy: 1%/2% milk, cheese (cheddar, chevre, Cotswold usually), cream cheese, yogurt, butter
Carbs: Oatmeal (steel-cut for me, rolled for DBF), brown rice, sushi rice, brown/wild rice mix; breads and pasta of various types, bagels
Protein: Beans (mostly black for soups and chili), chicken and/or turkey, ground beef, bacon, occasionally flank steak, chicken stock (sometimes homemade) and beef stock for soups and stews. Sushi (tuna or salmon) when we went out. Eggs (which I don't care for, but I've managed to get myself to eat...)
Veggies: much along the same line as fruit--whatever looked good. We did have some staples: Broccoli, boxed salad greens and spinach, carrots
Snacks and dessert: Tortilla chips and salsa for me. Homemade oatmeal cookies (that's healthy, right?)
Misc: garlic, onions, lemons, limes, olive oil

I'm starting to think eating properly is for those with money...:/