I agree that families and genes exist. I do not think race has anything to do with genetics or family. Race isn't imposed on people based on results from a genetic test. Personalized genetic testing I support and I recommend genome sequencing for anyone who can afford it. Family patterns as you call them have nothing to do with "race" because the black white binary categories are meaningless while family patterns have plenty of medical value.
For instance heart defects are known to have a genetic basis. So if it's in your family tree then you have to be very careful about heart conditions. Pistol Pete Maravich and WWE Star Jim Hellwig (Ultimate Warrior) had these sorts of conditions. But these sorts of conditions do not divide by race but by families, and are more popular in some tribes than others.
In a certain sense maybe you can say if you go to Africa and you find an ancient tribe like the San then in the case where they've mated within their tribe for a long enough period of time you may find certain genetic conditions which affect members of that tribe. This isn't so clear in the United States where people are very mixed and you cannot know who is what tribe anymore.
A Black American male in the United States cannot assume they have the same genes as the San tribe in Africa merely because they look similar. Race would classify them as the same (black) or "African American" when in reality they could have completely different gene pools. The Black American could be mixed with native American, European, and a bunch of other stuff, while only being 70 or 80% African, and even then maybe not the same kind of African as the San tribe.
Do you now see how worthless the racial categories are? They don't tell you anything about your genome except your skin and some superficial features. So if you have a life threatening condition you will not know it just by knowing your race.
In sum, ancestry and ethnicity ARE NOT race.