Are there any other platforms, like Pixelfed or Peertube, hosted under the same umbrella as lemmy.world? I wasn't able to find anything referenced about this on lemmy.world, but perhaps that's just my newness to the defederated universe.

For whatever it's worth, I'd love to have multiple instances housed under the same roof. I lack the technical skills and time to set one up myself, and most of the ones I've looked at appear relatively deserted or poorly moderated.