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/
Yep, you got it.
Down The Rabbit Hole did an episode about the guy.
Similarly, the Terry Davis episode is a wild ride.