That, and the servethehome review, seems to be basically putting the presentation slides into words.

A few years ago they seemed to have additional sources of information (they'd talk about things like instruction-to-port assignments and penalties for moving data between integer and FP domains).

Maybe that means that the AMD presentation slides are pretty good?

Beyond that it gets into pretty deep expertise into both Intel and AMD for comparison of the approaches and I assume most such high-level experts works for either AMD or Intel so you would not get an impartial view anyway

Maybe one of the write ups of AMD's presentation at hot chips next week will have what you want.

To be honest, though, I don't see a substantial difference between the haswell article you linked and the Zen 2 article, provided you are willing to look past the AMD slides. The haswell article is also just "putting the presentation slides into words," just from IDF 2012 instead of AMD Tech Day 2019, and apparently the author felt a need to do the block diagrams themselves.

(Also, FWIW, Agner's manual does have a literature section for Ryzen, it is just not numbered for some reason).