In the Table of Nations, Moses doesn't mention Egypt's (Mizraim's) children by name, only the tribes are mentioned.
Genesis 10:13-14 (KJV)
 And Mizraim begat Ludim, and Anamim, and Lehabim, and Naphtuhim,  And Pathrusim, and Casluhim, (out of whom came Philistim,) and Caphtorim.
But in the case of the other children of Ham, Shem and Japheth, the progenitors of their various nations are mentioned by name, e.g.:
Sidon and Heth are mentioned as progenitors of the Canaanite races.
Seba, Sabteca, Ramah, etc. are mentioned as progenitors of the Cushitic races.
Why then did Moses omit the names of the progenitors of the Egyptian races?
The case of Phut is even worse since none of his sons are mentioned in the genesis account but are mentioned in the book of Jubilees.
Since Moses wrote under divine inspiration, could there be an underlying reason for the omission? Please help me out with this.