It's not exactly "unrecognized" because it's fairly popular, but From -- yes, that's the name, and yes, it makes it very difficult to search for.
It's pretty highly rated, horror/mystery show. It's a lot like Lost except more horror less mystery. It even stars Harold Perrineau who played Michael in Lost.
The concepts and monsters are very scary and/or creepy. It gives me a Dead by Daylight "The Entity" and "The Entity's Realm" vibe if you're familiar with the game.
https://www.imdb.com/title/tt9813792/ https://en.wikipedia.org/wiki/From_(TV_series)#Reception
You can download specific DLCs but I'm not entirely sure they'll be useable. It's worth a try. Here's how you do it:
So for example, the Pearl Jam Song Pack could be downloaded using
download_depot 205190 222139
Rocksmith's DLC SteamDB page: https://steamdb.info/app/205190/dlc/
If this DLC has been disabled as you said, this might not work, or you might need to make sure that Steam doesn't try to update the game (which would disable the DLC again). You can do that by browsing to ~/.steam/steam/steamapps/ (assuming you're on Linux, or just wherever your "steamapps" folder is on your PC) and find the file called
appmanifest_205190.acf
and set it to read only. That should prevent Steam from modifying any changes you've made to the game. Just remember to set it back to writable if you want to update the game again.The game might not recognize the DLC as I said, but you should be able to access the files anyway if that's all you wanted. They'll be in
../steamapps/downloading
at least until the download is complete, then it should try to apply the DLC to the game, which might cause the files to get deleted. I'm not entirely sure about that.