I don't begin to 'know' that.
I certainly have come to accept as fact that the 9 more commonly known/seen 'races' . . . there probably are 9 such.
ONE source asserted that there were more than 70 such dinking around with observing earth. I probably 60-70% believe that.
So there are somewhere between 9 and 70 'races' of ET's clustering around earth? Sounds quite crowded.