These Galaxies UDGs Are So Compact We Thought They Were Stars. However, Q-FFF Theory says: These Ultra Dense Galaxies are the remnants of the former merging smaller galaxies.

So the former smaller Galaxy Anchor Black Holes of the small merger galaxies also seem to produce small ellipticall galaxies outside the main galaxies as Globular Clusters with many stars, around the smaller Galaxy Ancjor Black Holes. roduced by its by its "Penrose trapped Space time Horizon,". akso observed in the early universe as Big Bang splinter black holes.

Below: several 2e or higher graded Galaxy Anchor Black Holes, forming plasma or  globular star bubbes  also observed as the large scale flow in the Milky Way Halo.

Equal sized Big Bang Splinter Black Holes, seem the origin of all Herbig Haro systems creating Star- and Galaxy Anchor Black Holes. After merging, these Anchor Black Holes create Plasma Bubbles and later multiple stars or UDGs.

Seea slao:

https://bigbang-entanglement.blogspot.com/2024/07/mysterious-herbig-haro-objects-explored.html

Below:  

The single Black Hole based Travelling Tadpole Black Holes, seem  to be responsible for the Lyman Alpha filament structure of the universe.

The origin of Tadpoles is related to the velocity of black holes  see:

The Velocites of Black Holes even supermassive BHs. 

Reading: "Dr Pesce and his collaborators have been working to observe this rare occurrence for the last five years by comparing the velocities of supermassive black holes and galaxies." see; https://www.messagetoeagle.com/astronomers-have-identified-a-black-hole-in-motion/