Internationals and Interviews

Can anyone break it down. From what I’ve read here: Harvard, Duke, Dartmouth, Stanford and Yale prescreen international applicants. Columbia, Cornell Eng dont do interviews anymore. Upenn and Princeton is random Brown only takes portfolio/video

How accurate is this? As for availability how much does it matter since my interview is online and the interviewer is in a different state.

What should be the last day(tentative) to expect any more interviews? Is availability really an issue since they only select a few applicants from a country? They mostly do online interview.

I am from Delhi,India.