You listed almost no sources of fat, just two fruits, beans and potatoes/sweet potatoes as the only significant carb sources, and only five animal-based proteins. So, yes, you're missing out on a lot of healthful foods.
But, "what are some healthy foods" is a ridiculously vague question. I like the general guideline to focus on stuff that's on the perimeter of the supermarket. Tough to go wrong if that fills the majority your shopping cart. It's possible, sure, but it's tough.
Like Nighthawkz said, the worst things would be anything you're legitimately intolerant of, which you'd know through trial and error. And I understand what Bill was getting at with edamame, regarding the phytoestrogens, but I believe they're find in moderation. It's a bit of an individual call.