(I'm engaged somewhat in trying to get our team to write any documentation; once I've got that, I'll start trying to organize along exactly these principles)
Yes, that's Diataxis (formerly Divio). I faced similar challenges and found that combining it with MECE principles in my PAELLADOC framework made documentation much easier, especially with AI tools. Good luck getting your team started
(I'm engaged somewhat in trying to get our team to write any documentation; once I've got that, I'll start trying to organize along exactly these principles)