Simply put, most of the contestants they send to these beauty pageants are half-white, half-Filipino. Some are half-Asian (some other Asian ethnicity aside from Filipino) and half-Filipino. Some look typically Filipina (morena).
Megan Young: Dad is American, mom is Filipina
Pia Wurtzbach: Dad is German, mom is Filipina
Charlene Gonzalez-Muhlach: She’s mixed with European blood (Spanish) but not sure how much percentage
Karen Ibasco: Dad is Chinese, mom is Filipina
Venus Raj: Dad is Indian, mom is Filipina
Janine Tugonon: no significant mixture, she’s pure Filipina
Shamcey Supsup: no significant mix too
But to end this answer, you can agree with me that they are all equally beautiful, right? :)
Filipina beauty is diverse.