We do have the more "dominant" genes. The issue is that because of ADOS' admixture in some of our people/I'm sure his point was that a black gene isn't inherently more dominant and you just admitted that by saying genetics can overide this so called dominant by nature gene.
a portion of ADOS people have a bit of white in them(altho not as much as some like to exaggerate) so that means some have recessive "white" genes.
some of those men iso brought up, have ADOS parents that likely are like that with some white ancestry/recessive genes that played a part in how they look.
alot biracials are gonn look like lightskin blacks/or show they have black descent.Barack Obama, Jordan Peele, Melyssa Ford, Mowry sisters are examples of biracials who were able to retain predominant black admixture and look like black people.
I would say they got lucky and are exemptions because most biracials I’ve seen lose the majority of their color and features.
likely the ones you saw are children to a ados mother or father fit he mole of what i described ^^^.