Below:
M31 Complex Galaxy Rotation Curves explained by Triple-Black Hole Vacuum Dipole Repeller Gravity.
Dual Primordial GABHs ( Galaxy Anchor Black Holes) with equal mass and One Central BH with unequal mass seem to be responsible for the complex Galaxy Rotation Curves. The GABH and CentralBH mass ratios, seem to explain the observed variability of galaxies observed through the universe. (see also Dipole repeller gravity of Quantum FFF Theory.) see: http://vixra.org/pdf/1806.0368v1.pdf
and http://vixra.org/author/leo_vuyk
Below: Rubin, Ford and Thonnard Galaxy rotation curves of different galaxies ( 1978)
Several Galaxies show even more complex rotation profiles, probably due to 2e generation GABHs due to merging processes.
See also image below.
The new Q-FFF Model for fermion repelling cooperating Black Holes.
Equal sized Primordial Black Holes are the creators of primal Herbig Haro systems with dual GABHs (Galaxy Anchor Black Holes)