However, I could not find any information regarding FM-API command sets such as MLD, MH or DCD command sets that enables configuration of CXL memory devices. Where can I find additional information regarding that.
The work-in-progress was posted on Dec 2021. The WIP was released to encourage feedback from the community for areas that need attention or areas that are missing. Currently the WIP does not have what you're looking for (nor does the Redfish standard today).
We can take this as feedback for further internal discussion; please feel free to add further comments for us to review.