I am Filipino, white, and Latina. Does this make me a more interesting applicant and am I still apart of the over represented category?
That alone doesn’t make you a more interesting applicant.
If you are curious as to what you should select, I do believe there is a mixed-race option on the CA and other applications.
Are you half white? Half Filipino? Have Latina? 10% Latina? 10% Filipino? What do you usually identify with on your SAT/ACT/AP/SAT2 tests?
You can check all of the categories that apply to you.
I definitely think third-culture kids are interesting and we are having more of you as a society. I do hope it might add some feather weight in your favor, but I don’t think it would be a huge help.
Good luck.