The new Physics of Q-FFF Black holes seem the origin of plasma and star producing black holes.
By the new Penrose "trapped space horizon" , or: ISCO ( Innermost Stable Circular Orbit.) see:
the ISCO, seems responsible for close plasma prroduction out of the trapped Axion vacuum and repelling the plasma into a disc and two jets. ( see image.)
Conclusion central Black Holes of open- and even clobular clustsers are aasumed to be formed by the central black hole of an early remnant galaxy.
Globular clusters seem to be older as the remnants of central Black holes of merged early micro galaxies.
The Black Hole Splitting Big Bang is assumed to split the first BHs into smaller BHs which can evaporate into smalle BHs and even single oscillating axions to form the vacuum leaving empty holes (Voids) behind.