I regard Barry's half-brother David (deceased) to be a striking look-a-like. David was a literal brother from another mother but supposedly same father.
Without a DNA test paternity cannot be proved conclusively.
In my observation children in any birth order can look like one parent or the other or a blend or like neither or like a grandparent. It cannot be predicted nor assumed, IMO.
Maybe the Posse can put the paternity issue mostly to rest short of a DNA result. If they managed to get DNA from Barry and his family that actually would be shocking and breathtaking!
Hussein a little resembles his half brother George from Kenya.
Hmmm, indeed!