Glad I was able to help you get your database back in action. I made it because I'd added so many cool looking games and had no idea how to pick one to play next... so I figured adding it to a database was the way to go. I was (and still am) surprised that Itch doesn't have any way to export collections.
As for separating by type, it may be a bit tricky if it isn't explicitly defined in the code. Games would be fairly easy to pull out as long as they have a "game_genre" set. But the rest might be a bit trickier. If you can give me a few of each type to put into a library of my own, I can see what I can do.