I have caved in and began reaching out to admissions. Here's what I received from University of Notre Dame: "First, it’s important for me to note that our interview event is different from most in that we admit students beforehand, so it’s better considered a recruitment than a standard interview event.
That said, invitations have not yet been sent; our first round of invitations will be sent late next week. However, all of our first-round applicants have been contacted for a pre-invitation interview. Thus, if you have not been contacted, you may still be on our waitlist but, of course, the probability that you will be invited is notably lower. "
Not looking positive in my favor, but it's better than not knowing.