[4bpp]

Ethiopian names seem to generally not follow the western first name/surname pattern, instead using the Semitic system where you list the male lineage (cf. https://ethnomed.org/culture/ethiopian/). I remember this information receiving some unusually mainstream exposure thanks to the moments in the limelight that https://en.wikipedia.org/wiki/Tedros_Adhanom enjoyed this year.

(Now, I don't actually have enough of a sense of Ethiopian ethnicities to be confident as to whether this holds true for all of them and whether Timnit Gebru belongs to one for which it does, but the case of @DrTedros certainly left me with a general heuristic saying that referring to her as Gebru may be an ignorant foreigner move whereas using the "first" name (as US academics generally refer to each other anyway) is almost certainly safe.)