See, if you only ate the foods in this link, there's enough nutrients, fibre, etc etc for anyone to eat healthily.

Of course, you need to apply some thought, because some of them are bland as hell, some require considerable cooking methods (the kidney beans come to mind here), some are fine eaten alone, but all require moderation in the amounts.

You could easily just mix some as like a salad of some sort, but IMO, then such a meal should only be dressed with a little oil and vinegar dressing. Not bucket loads of mayo (which can be eaten in small quantities). Plus it depends on what the list of foods are cooked with, for example, the pearl barley, to my mind, is ideal for using in stews, particularly lamb. Even then, it's often about portion control.

The adage "you are, what you eat" isn't far wrong. If you're a fat bastard, then it's either the quantity of what you're eating, or the "quality" i.e. high sugar, high fat, high complex carbs, etc.

Pretty much anything can be eaten while staying healthy and retaining an appropriate weight/BMI, but if it's high in whatever might be the current target on the health nazi's hit list, then just eat a small quantity/portion and mix that with other stuff that is "good for you" (small amount of cream with that fresh fruit etc etc).

Rocket science eh!