What else is there available in the official documentation? VMware Docs Search (apart from blogs) Official documentation is really missing depth... explanation of internal working, keywords, etc...
Also is this feature supported and will be supported in the future? (some VMware official answer would be prefered)
Some threads with similar issues:
Dynamic Types plug-in is an official vRO plug-in, and as such is supported by vRO team.
There is some integration of Dynamic Types stuff in vRA, which was done by vRA team, and is supported by vRA team.
Any solutions on top of Dynamic Types plug-in, like plug-in generator package, are not supported by vRO team. Your best bet would be to contact the solution author to get support.
As for insufficient documentation - agree with you