There is a corresponding DeveloperMemoryTag enum for all of these labels in the “Memory” tab of the dev console, except for the one named TerrainPhysics:
All of the above labels correspond to exactly one StatsItem under the Stats service, and they are available for plugins to read there, so it seems TerrainPhysics was just missed when adding in the enums.
Adding this enum would let developers more accurately track memory usage in live servers using their own systems.
EDIT: It seems like another value is being added soon, Enum.DeveloperMemoryTag.GeometryCSG, but a tag for terrain physics is still missing. I’m making a small edit here to bump this thread since it seems to have been lost.