I want to add a couple of good ones I’ve found:
Jeff the Killer lost media: no one knows where the original Jeff The Killer image came from.
Mortis.com: old weird website
Also here’s a good website on various obscure computer/Internet related oddities: https://suricrasia.online/iceberg/
Some have speculated that Nakamoto is an alias for Adam Beck, or one of the other founders. It is known that nakamoto was living in a European timezone.