Maya hidden commands

cmds is dynamic so there’s no definitive list.
Any plugin can add new cmds. So doing dir on the module is the best way to get a list.

In the Maya script editor, type cmds., then press ctrl-space to trigger autocomplete, showing the available commands.

runTimeCommand -commandArray maybe with -q in there should dump all the “not coming from the default commands” (untested)

To output a list of functions (without description)

from maya import cmds
print(dir(cmds))

Maya Python