Variations in the primary BH mass with respect to their host (stellar) galaxy mass at z ∼ 0.18. Our final catalog consists of 100 BHs all in radio mode, including BHs extracted from the two GALACTICA zooms. Overall, across all stellar mass bins, BHs in NEWHORIZON are under-massive in comparison to observations, lying up to one orders of magnitude below the bulk of the observed BH masses (see, e.g., Fig. 22 of Dubois et al. 2021).