Particle OG, or AG (like Agamemnon), relates to giant people linage.
Ogham - Wikipedia
Oggham language (Occam name sounds similar), it's the language of the ancestors in Ireland (Giants).
Ogg, Oggham, Achaemenids and Achaei (Akhoi), Agamemnon, the Ogrish.
There were some people called Uk or Ukkos from UK-rania/UK-raine (Kingdom of Giants?), Ugros (Finnish), related either to this ancient linage of giant people. Ukkos or Akhoi or Achaei.
Not a surprise -survivors-
Ahoy (greeting) - Wikipedia
Finno-Ugric languages - Wikipedia
One hypothesis about this story of high lands and lower lands, besides atmospherical changes, it's in the genesis book just after the flood, and due very dramatical changes, a "mixed" race came (maybe related to nephilims) so this giant race. As waters were receding, normal people began to spread out, the civilization path pavemented on
increasing skills, intelligence, culture, etc, etc.
At the same time, this ancient race were dissapearing under these changes, or they couldn't adapt themselves fast enough, due to these health problems with head pressure in the lower lands (the more productive lands), maybe even as some atmospherical changes happened they couldn't even to live on upper or higher lands.
They had these problems? (trepanations), and got progressively dumb, in a dizzy mind, slow minded, to be finally extinguished.
Maybe paracas skulls and akhenaton (AK/AG particle again), story it's the last stage of this people, descending from giants and a different human race (that's for sure). There are two main places (surely there should be more), or locations for this cone heads (peru and around black sea), it's very strange any reference to old egypt. I wonder if like Smithsonians in America have made to dissapear lots of giant skeletons, the europeans of 19th century had made either to dissapear homo capensis out from egypt.