Visual Evidence of Dark Matter From Banana Galaxies and Cluster Collisions Dark Matter has less Fermion Inertia, , is faster deceleratiing, so Q-FFF model says: DM has Less Inertia Mass, Than Fermions Baryons etc..

see also: https://bigbang-entanglement.blogspot.com/2024/07/colliding-galaxy-clusters-show-speeding.html

Two merging and passing Cluster Glaxies, (A) The smaller Cluster  is overshooting, the larger cluster and leaving Dark Matter behind (C), The larger cluster is growning, obviously, mainly by the Dark matter left behind. The smaller Galaxy has less deceleration- or  inertia effects than the larger Galaxy.  How/  by the difference between inertia of Fermions and Dark Matter.

The Dark Matter of the Larger Galaxy is growing by the attracted extra Dark Matter of the smaller Galaxy. 

Conclusion:

Dark Matter Black Holes ( small or large) have no mass or inertia effect. It has only single pressure Gravity by the oscillating Quantum Vacuum Dark Energy.

See also the  dual opposing Quantum Gravity of the Q-FFF Theory acting of Fermions/ and Baryonic matter.

Reason of Dark Matter shows less deceleration Inertia, than Baryonic matter.

see: 

Emergent Gravity by Dipole Repeller Rigid String Pressure the Origin of Quantum Gravity and Non Inertial Black Holes.see: https://vixra.org/abs/1710.0050

Or: https://bigbang-entanglement.blogspot.com/2024/08/a-simple-mechanical-new-string-theory.html