yeah, I figured Mata Nui himself created all the other sapients. and I was gonna namedrop BS01 but didn't know if it was allowed.
I forget who it was on another forum but when it was revealed Mata Nui was an explorer's vessel meant to research alien cultures someone suggested that the various non-matoran sapients were proxies of the various alien races he may have studied so he can experiment to which cultures were best. like for example, the Skakdi were some medieval Orcs due to their warmongering and I think Vortixx were some stock sci-fi race that was the opposite extreme of being sufficiently advanced and both cultures had faults.
I think Greg shot that down though.
where do we get the 40+ number though? was it an official number mentioned or taken from the number of one-off members the series had and extrapolated to one character = one race/species?
also wonder how many actual sapient beings were in the MU, like the total population of the universe.