Of the five pictures, the top center and top right are baby David, NOT POTUS Barry who is seven years older. They are similar, but different as one would expect for some half brothers.
The darker boy in the studio picture of the two boys is Mark Ndesandjo born in 1965. His same facial features as an adult can clearly be seen in the pictures in this Daily Mail article:
Re: Top center and top right pix in that group....
Head shapes are different, the two right ones have a rectangular face, jaw and temples same width,
and the other has an oval face, with chin way narrower than the temples.
And the article pix show Mark and 0 look very similar.
Note to all: go to the link, don’t post em here; they are Getty images which can’t be posted here :0