Yeah, I want to write a little scraper script that can find all of the Hive-Tube based instances out there, I just haven't had the time to get it done.

BeeToons.tv has about 30 other websites syndicating her instance:
https://beetoons.tv/about/follows

Finding who is following who though, will take a bit of work. Right now I'm working on the auto-import script. The peertube v5 upgrade was a beast and it broke some things. Anyway, auto-imports make it a lot easier for people to leave sites (or use a Hive-Tube site in tandem) like youtube, bitchute, spotify, pandora and even netflix.

I like to watch the "weekly downloads" stat here:
https://www.npmjs.com/package/peertube-plugin-hive-tube
It shows us how many sites are downloading/installing Hive-Tube on their servers, but it doesn't tell us who. Don't worry though, that is another scraper script I would like to get done too at some point.