Here's a screenshot of what it looks like - it's just an ordinal ranking with 4 levels in 3 categories, not like a numerical ranking out of all the applicants or anything.
I frankly have no idea what that third category is, because I'm I'm not even an engineer - my application was in ecology/ ag science. Hopefully it's not some terrible mistake!
Yes, once you log in there's a letter with the results, and another document with some details on how you were ranked. I was lucky to receive an offer. Good luck everyone.