In Dogon mythology, the ancestral spirits are called the Nommo. The Nommo are primordial beings in the religious traditions of the Dogon people of Mali, often described as water-associated, amphibious, fish-like, and connected with creation and teaching.
Dogon cosmology presents Amma as the supreme creator, while the Nommo help establish order and transmit knowledge. They are sometimes called the “Masters of the Water,” “the Monitors,” or “the Teachers.” In some accounts, Nommo was created first and multiplied into pairs of twins.
A common mix-up is the plural form: Nommo may name an individual or the group, while Nommos or Nummo are also used for the spirits collectively. Amma is the creator deity, and Lebe is associated with the earth, so neither is the best answer to this question.
The Nommo tradition is also linked to ancestor veneration, ritual knowledge, speech, and the Dogon emphasis on paired forces and balance. Their mythology was recorded and interpreted by twentieth-century ethnographers, though some later claims about Dogon astronomy remain controversial.