Related: some ex-Geocities employee somewhere must have a back up of all those sites?

Not as far as anyone is aware. There were massive archiving efforts running leading up to the shutdown. One archive reproduced the directory tree and most GeoCities links could be replaced with reocities and simply worked.

I think the main bulk of the archives for slurped into the internet archive. I don't know if any of the independent GeoCities archives are still online, but everything that was saved should be in the IA by now.

https://theoldnet.com, scroll down.