Djoser and his Hollywood facade front set.
In this Dynasty. ...the Mesopotamian influence is still pushing.
The above link is an overflight dropping markers.
In my thinking....the Elite Oligarchy with wealth to have these fort palaces and
Burials which have near parallel in burial practice as Sumer.
Everybody goes to sleep for the journey...even donkeys and pets.
This looks like Sumer 2.0...
At some point a more Organic Egyptian socio signature appears.
Khufu or Khnum Khufu is distant trade and opportunism
The red Sea ports...the Levant shipping.
Sinai Turquoise mines...
The contact is with the history which came to Naqada period Abydos by boat.
Even if we skip ahead to Hyksos...and consider how many times Foreign power got
The Sedge and Bee....
Egypt appears a land where opportunity abounds...
The people adapt to who rolls out with the Priest and Oligarchy for Coronation.
The Egyptology side pushes this unique Egyptian culture thingy from the get go.
Evidence indicates Egypt evolved much later in becoming it's Organic signature.
With the last Hyksos getting run off....you consider how long foreign leverage
Sat on the Throne of Upper and Lower Egypt.
The technology side is coming in from Mesopotamia and Levant.
Imhotep may not have been 100% Egyptian.
He walked away from at least 1 pyramid and left it incomplete...
So much for Pharaoh tomb primacy.
I am not availed to all the research books you are.
I'd wager the Mesopotamian signature is greater than consented to.
Egyptology is a protection racket : )