Below: The missing baryon problems mechanism. by the production of real leptons overdensity, out of the Axion vacuum at the trapped space time Frame around the Black Hole horizon ( Penrose)
So: overdensity of leptons came first around black hole mainly ejected and channeled inside the dual Polar Plasma corkscrew Jets, and Clouds, later concentrated by contraction into Baryons.
Evidence That Black Holes May Be Creating Dark Energy, and even an overdensity of Leptons. see; Q-FFF Theory.