There is one other point. I have read that his name originally was Baraka, which he changed to Barak, presumably because it sounded better. And called himself Barry.
Maybe the birth certificate reads Baraka Hussein Obama? Which means, in Arabic, “Holy Hussein Obama,” after one of the Holy Imams.
Barak is simply an Anglicized spelling of “Baraq”.
He’s named for Mohammed’s mythical winged horse.