Why are there two RadioHead libraries?

I’m about to start a new project using RFM69 radios and the RadioHead library.
When searching for the RadioHead library in PlatformIO, it shows two. They’re both by Mike McCauley and look the same except for the number of downloads.

Anybody able to shed some light on this?

Which of them do you mean exactly?

Assuming Mike McCauley is user mikem, I only see a single package named mikem/RadioHead in the package registry (searching via both Web and CLI).

Perhaps you are searching your system locally and have multiple copies installed? How are you searching “in PlatformIO” ?