masculine, feminine, neuter

Commonly referred to as masculine, feminine and neuter, though this is somewhat misleading since physical gender has no implication on Celinese's grammatical gender.

Human, animate, inanimate. Celestial bodies class as human; otherwise semantically driven.

The WALS chapter associated with this feature says that natural languages that only had pronominal gender agreement, such as English, were counted as having gender. Merely working the WALS's definition of gender rather than trying to start controversy, Esperanto has three: masculine, feminine, and inanimate.

celestial, terrestrial and human. Human vs. non-human is semantic; celestial vs. terrestrial is formal.