I don't know a whole lot about these theories but I get the basic principal of each of them. Personally I think that it would be fair to call the Buddha himself a scientist and his teachings scientific. Any conclusion that the Buddha drew came from personal experience and observation of himself and the universe and an example of the physical and observable world was given to accommodate each revelation in the form of parables. The Buddha was in every sense a psychologist. He harnessed his mind in a way which allowed him to observe his own consciousness from an external perspective in which he could categorize different feelings and thoughts, understand how they had arisen and how he could prevent the mind from attaching itself to them. His revelations allowed him to see the world in a very pragmatic way and I think that modern scientists and the author's of the theories you have described are not presenting anything which was not observed by the Buddha but they are explaining them in more mechanical terms through the use of modern scientific methods.
I would further say that similar albeit less refined revelations have reached earlier human beings with the realization of different planes of consciousness via dream states induced by sleep and through the use of hallucinogenic substances (a common practice in early Indo-European culture especially early Indo-Aryan peoples, the ancestor to the society and culture of which the Buddha was a part of). These states were always interpreted as a result of supernatural forces and ones spirit. The concept of a personal spirit or soul was established as the key ingredient to consciousness by early peoples but in time people like the Buddha, through pragmatic thought and meditation, were able to understand that the soul is a product of the mind and thus so is consciousness and the perception of all reality.
In a way yes, scientists are unraveling what has already been revealed but they are taking these concepts from their humble and abstract beginnings in religion and spiritual thought and taking them towards a pragmatic, systematic and categorized way of understanding them just as the Buddha had done thousands of years ago.