Well I have also similar openion, and more over E1b1a had origin in west Africa and migrated to the south and south-East Africa along with Bantu expansion recently, much before Ramsus III time (over 3000 years). When I see the study, it says:How come Ramsus III carry E1b1a, while the ancient Egyptians are 90% todays Egyptian and other North East African cushites? Any AA professor working with the team?
"The unusual mummification process of unknown man E, including the ritually impure use of a goat skin to cover the body, could be interpreted as evidence for a punishment in the form of a non-royal burial procedure"
He was guest or userper of power? For sure he was non-royal.