@sybbie719 Thank you for replying so thoroughly!
I completely agree that URM status is not simply a Y/N , checkmark or x on an app. While my family is not low-income, we are the first generation to have lived in the US (our family moved to the US when I was 3 years old ). My dad was born and raised in Belize, and his whole family still lives there + my mom was born and raised in Mexico, her family still lives there.
I am not counting on a “hook” like URM status or twins or whatever as being the thing that gets me or my sister into an ivy. I think I am a competetive applicant base on my academic achievement and passions (stats, ECs, essays, etc).
HOWEVER, I recognize that in the face of such astronomical odds of getting admitted, I think anything that makes the admissions officer look at your profile for a minute longer is beneficial - I just don’t know if this could be that.