I also would like some sort of reference to the complete PlusSpec layer naming list.
I understand this would be a list that may have changes from version to version.
The reason this is useful to me is assist understanding the complete PlusSpec philosophy in relation to layer naming at a glance.
It is also important to me in order to plan multi plugin workflows, ensuring that each plugin plays nice with each other and with my requirements.
Maybe add it to release notes for each version ??
You are right it easy enough to reverse engineer your layer naming so i am about half as happy to do that, if it is not a published resource.