What are my odds into ivies?

AFAIK all HSs have them and send them along with the student GC/CC report on the application.

HSs vary greatly on the extent that they make the report or profile available to parents or even students.

Here is an example: https://www.greatneck.k12.ny.us/cms/lib/NY02208059/Centricity/Domain/697/NH-Profile-Class-2020-101519-4p.pdf