Is authR another way to say authZ? I've never heard of authR and a quick google seems to mostly show a cloudflare project and stuff related to the term "author".
[0]: https://en.wikipedia.org/wiki/AAA_(computer_security)
edit: added reference and context for completion.
In the same vein, it seems like a lot of people aren't too aware of the "identity" space so there's a whole lot of re-inventing the wheel with external sources not realizing something already exists.