In the end, there was nothing else to update. I was lucky to receive a generous amount of loops and sound effects that weren't even available publicly online. Unless some kind of miracle happens I think it's fair to say that everything's been found.

Here's a Google Drive link to the entire archive: drive.google.com/drive/folder...

I do have that information, but I haven't thought to add it yet! This only covers about 30 or so loops, but I'm hoping someone with experience can scrape the Wayback Machine so I can add information for every other loop as well...