This chart often goes on the internet and is used by Fruitarians/Raw Vegans to "prove" that humans are frugivores.... it says "Alkaline urine" for humans, really?
Exactly. The pH of human urine depends on diet so that's a bit of a circular argument.
The chart is very selective and exists solely to 'prove' the point it sets out to.
The typical mammalian frugivore is a primate - I can't think of any other mammalian Order that mainly eats fruit. Humans are primates, so a lot of our anatomy and physiology is going to be very similar to a typical frugivore, whatever our 'natural' diet is.
There are many examples of animals that are exceptions to the general rule of their Order. Here's an extreme case. Giant pandas are in the Order Carnivora. They are bears and, with the exception of polar bears, all the other members of that family are omnivores. Pandas have a digestive tract that is very typical of other bears. Their diet in the wild is 99% bamboo and has been for a few million years. They eat more or less constantly and defecate frequently because their digestion is so inefficient. OK, so I didn't choose an evolutionary success story to make my point. It may have been better for them if they hadn't gone down the evolutionary path they did .......................but then there'd be no such thing as a giant panda. A panda is without question a herbivore, not an omnivore.
We're the evolutionary opposite of the giant panda. Our early primate ancestors were almost certainly more specialised in their diet but we are the ultimate generalists who are pretty adept at specialising when we need or choose to.
What is the typical hunter gatherer diet of humans? There isn't one.