The best diet for an individual will be determined by their genetics. There is no one diet fits all. Just anecdotes from people proud of their success. Find out where your ancestors were from and learn about their ancient diet, then mimic it. Anything processed is obviously a no-go if you want to achieve elite health.
My ancestors were from Northwestern Europe. I thrive off mostly fatty red meat and potatoes, some dairy, some bread/pasta, hardly any greens, fruits or veggies at all. Rice does not sit well. Nor do mass amounts of greens. Nor any fat(including the prized EVOO) other than butter and tallow. I choose to source my EPA/DHA from cod liver oil supplement as opposed to seafood(also sits well). But that's ME. It took years to fine tune it. What's causing energy sap here? What's causing bloating there? get the picture? Do your research and best wishes bruth.