There's also the PWGSC National CADD Standard in Canada (w/ both French and English layer naming), or for an international flavor, the ISO 13567-1 thru -3..... but most of my work is Stateside, so the US NCS, while very building-centric is most relevant to me. Flawed as it may be, it's still the closest approximation to a national multi-disciplinary approach for drawing set organization, sheet and file naming, and layer naming around. As such, it's a useful tool for inter-office/inter-organization collaboration.
But, for layer naming, it would be quite helpful if a hierarchical layer manager existed.. The naming conventions in the NCS layers would lend themselves nicely to a tree-structure, collapsing and expanding by discipline, major group codes, status, etc.