Top three panels: the r-band magnitude, redshift and stellar mass distributions of the parent sample adopted in this work (gray-filled histograms). We highlight the shallow low-z sample from Baldassare et al. (2020) and the deep high-z sample from Kimura et al. (2020) with blue dotted and dashed lines, respectively, to highlight the bimodality in magnitude and redshift within our sample. We also highlight with an orange dot-dashed line the bulk of the IR-selected MBHs (Ward et al. 2022). Bottom panel: the redshift versus stellar mass distribution.