While it would be nice to decide on best practices, I fear that the amount of cargo culting and NIH syndrome would quickly render the initiative pointless :-(
Some examples we are currently tackling are secret management and rolling out updates. I can easily find products that promise to solve these. I can find some articles about "how we, at $COMPANY, solve this particular problem." If I am really lucky I can find one or two articles that answer "here is what we, at $COMPANY, do, and here are one or two alternatives we did not like for reasons relevant to our context." It is very difficult to find a proper review that lays out common patterns of implementation and gives a framework to discuss tradeoffs thereof.