My 9 years of research on the first 11 chapters of Genesis leads me to believe that the Flood account was written by Noah and Shem, and handed down in the form of cunieform tablets...eventually to Moses.
YECism “word of God?” Interstesting that you follow that claim with something no where to be found in the Bible, namely “Noah and Shem, and handed down in the form of cunieform tablets.”