Study No. 1 in The Astrophysical Journal: A Preferential Growth Channel for Supermassive Black Holes in Elliptical Galaxies at z ≲ 2
Study No. 2 in The Astrophysical Journal Letters: Observational Evidence for Cosmological Coupling of Black Holes and Its Implications for an Astrophysical Source o
Alas, I’m too detached from the science to really get a feel for the validity of these findings
Same, I just go by the expert consensus in the field. :)