1. The archive doc should give a fairly good idea on how it is categorised. There are differences, I mean certain categorisations such as fullscreen vs windowed are not present, and the edit length categorisations are stored differently, but what's in there is pretty close to what I have.
2. Yes, although we're hoping on recovering as many of these mods as we can. The idea is that the downloads will be hosted directly on the mod archive.