I'll do more research and get back to you on that.
Meanwhile, the physical evidence strongly suggests that the pyramids and other megalithic structures in Egypt, could not have been built by the dynastic Egyptians.
I understand that many people are wedded to the traditional mainstream narrative of Egypt's monuments, but those views have become unsupportable, in light of closer observation and analysis over the last few decades.
No, as a matter of fact, they haven't. Even though the position of Robert Schoch has changed, he doesn't deny that the Giza pyramids were built by dynastic Egypt; his view is that there is evidence that the location was chosen because of earlier structures there (the descending passage connects with the rest of the pyramid internals, but appears to be an unfinished, much earlier structure). This appears to be mostly an outgrowth of his geological analysis that there is water erosion on the Sphinx, part if its enclosure, and on the walls of Sphinx temple and Valley temple which stand out in front, but in part I believe this is due to his association with Bauval, who's just an occultist fringe writer.