Which developers should I follow?
I had a great mentor that recently left. I learned immensely from reviewing their code and having them review my changes. Their reviews dramatically changed how I structure interfaces and code.
To keep learning more, I would like to read other developer's code. Which codebases should I follow to see how other people write clean and clear code?
I would read the standard lib of whatever language you are using. It normally has most of the common patterns and best practices of each language.
What languages are you interested in? C, Clojure, Kotlin, Javascript, Python, Racket, Crystal, Java, something else?
But yes, i would mainly recommend the standard lib of the language in question, but not all programming languages have a "standard lib" you can read.