If you follow the people's looks from the Northwest to the Southeast, you'll see it:
Taiwanese
Philippino
East Indonesian
New Guinean
New Britain
Guadalcanal
Espiritu Santo
Fiji
Somoa
Tahitian
Easter Islander
Finally, Hawaiians
And Maoris from New Zealand
You can tell that the Taiwanese start out as a Mongoloid race, and as you go toward New Guinea, people get darker and their hair is more curly until at Papua New Guinea the people are very Australiod (proper name for the Australian Aborigines). Then the people to the East (New Britain- Espiritu Santo--Fiji-Samoa) from very dark and Australiod to more light and less Australiod, until the Polynesians at the very end point of their epic discoveries are the most mixed and neither of their original races.
That’s quite a well put together documentation. Yes, the Negritos that remain are in isolated spots as hill tribes or islanders. Others like today’s Thai are recent arrivals from Southern China and the high river valleys of Vietnam. Even more recent are the numerous hill tribes from Tibet’s foothills. The Mon who are scattered throughout came originally from India. Quite a mix.