Ask HN: Lots of Engineering ladders, skill grids, and none for QA?

Hey. I've been looking for decent skill grids, and Quality Assurance ladders that are being used in companies out there, but over 1 year of searching didn't bring any good results. There is so much from this area for software developers, really nicely thought skill grids or ladders. Anyone ciuld share the ones you use? Or any articles, books or other places where something like that can be found for QA?