Slightly tangential but I want to throw out the blog of my previous team/organization at Microsoft- https://devblogs.microsoft.com/ise/

I happened to be one of the engineers that designed and help launch this blog in July 2015.

Despite many attempts by marketing overlords it has remained pretty pure for 9 years - all the authors are engineers writing production code with real customers, and almost every blog post contains a direct link to a GitHub repo with the full code context to reproduce the article - again with production* quality code.

The same org also publishes the entirety of their engineering process here https://github.com/microsoft/code-with-engineering-playbook that has been continuously refined since 2018.