The smaller HH Black Holes systems seem to be not able to form stars in between but only Dust Balls. see Sagittarius A.
Sunspots seem to be former Cometary Black Holes.
Below: The Perseus Cluster, with two equal Gas Holes representing GABHs of the largest first Herbig Haro system.
GABH is: Galaxy Anchor Black Hole just Like SABH (Stellar Anchor Black Hole)