Hercules is already a consolidation with connecting material, Lost ala 600 B.C.
The previous mytho Big Dude stories weren't automatically the future Herc.
"Herc" vs. the giant that couldn't be beaten while his feet were on the ground,
is a Greco version of a myth from Berber North Africa, say around Tunis.
The Atlas mountains end there, and the greco Atlas titan myth is also very old.
This is perhaps 1500 years before the Arabs show up.
One can speculate a common origin, of these two separate stories.
Ptah and/or Thoth alternately come from the Atlas area,
sometimes from Sudan; always a hint of non-Egyptian.
Hawaii has all sorts of weird mythos about their pre Captain Cook past.
Supposedly the guy that showed "everybody" who mattered,
where the Hawaiian islands are, relative to Fiji (etc)
was tall enough to be unfazed by 40' ocean storm waves.
And could handle molten Lava with his bare hands.
Somehow he "boinked" (because this is always a little shaky with a wink)
and a giant baby shows up.