BH mass vs. dynamical mass for our sample (stars with green contours for HYPERION QSOs, and red contours otherwise), WISSH QSOs at z ∼ 2 − 4 (gray diamonds; Bischetti et al. 2021), and luminous z ∼ 4 − 7 QSOs (gray dots and gray squares; Venemans et al. 2016, 2017; Willott et al. 2013, 2015, 2017; Kimball et al. 2015; Trakhtenbrot et al. 2017; Feruglio et al. 2018; Mortlock et al. 2011; De Rosa et al. 2014; Kashikawa et al. 2015; Neeleman et al. 2021). The dashed black line (and shaded area) is the local relation from Kormendy & Ho (2013). The light green dots are the remaining HYPERION QSOs for which we were not yet able to perform a detailed study of the dust properties due to a lack of observations in the submm regime. The stars are color-coded based on the value of G_gal. The thin red arrows indicate upper limits on the dynamical mass.