"southeast asia" is not a thing  vietnam is also its special thing as it's an exact copy of china (like korea), vietnamese people are also the only ones that will call themselves "southeast asians" rather than their nationality purely because of how little their culture looks like any country around it other than china (picrel). the philippines is basically a western country where they eat chinese food.  other than the cuisine, the philippines is just an exact replica of the united states of america with some leftover spanish legislation, not unlike any area of the us west of the mississippi or puerto rico.  the rest are varying shades of india.
Netherlands