Galaxy cluster map shows remnants of the Black Hole splitting Big Bang, creating dual BH Herbig Haro systems for star/ galaxy formation. and the Lyman Apha forest.
Massive clusters of galaxies, some with more mass than a hundred Milky Way galaxies, have been detected from cosmic epochs as early as about three billion years after the big bang.
see: https://scitechdaily.com/astronomers-reveal-suppressed-star-formation-in-the-early-universe/#google_vignette
See Above: The well known 6 massive early galaxies seem to be ( by Q-FFF model) massive Big Bang Black Holes searching for a partner to form a dual Herbig Haro star forming system.
above: One example is MRG-M1341, at upper right. It looks distorted by the “funhouse mirror” optical effects of lensing. In contrast, the purple blob to the left of the galaxy is an example of a dust-and-gas-rich galaxy.