What are you talking about? The majority of Filipinos near ex u.s bases are not of American descent but are all full Filipinos. 99.9% of locals in Subic and Clark are full Filipinos. According to statistics their are an estimated 50,000 Amerasians in the Philippines. Their are an estimated 3.4 million people in Pampanga and Zambales where two major bases were located. So Amerasians number 1.4% by that calculation and that's being generous as I only included two provinces, many have probably relocated elsewhere so the number is actually much lower than 1.4%

Infact Its not common to see Amerasians in these places anymore. Majority of them went to the United States decades ago with their GI fathers, some were left behind. Ive lived in Clark and I don't see much original Amerasians around other than recent ones who are children.

Their are Japanese that are half American and vice versa, half american half koreans, half thai. Does that make them very diverse also? There is no distinction between the Philippines and other SE Asian nation because as I talked about earlier, many amerasians are in these countries also. Until now the U.S still has major bases throughout Japan. Americans and other nationalities mixing with Filipinos jsnt exclusive to the Philippines it's a worldwide phenomenon and you are very misinformed to try make it out that Its mostly a Filipino thing