It looks like some users did the work to archive LittleBigPlanet, too:
https://archive.org/details/@littlebigarchive
Hopefully it's comprehensive.
People came up with all kinds of hacks to push the engine to its limits. They made FPS games, top down Zelda dungeons, and all kinds of crazy stuff with LBP. It was awesome.
I haven't checked out LBP's spiritual successor Dreams yet (I don't have time to game lately), but I've heard it's phenomenal.
That said, I do enjoy watching others try to clear some of the diabolically difficult levels that Mario Maker creators design.