Stellar to BH mass relation for the fiducial (shaded contours) DEL (line contours), ins-sn099 and del-sp099 models at redshifts 5, 7 and 10. Here, we present the relation as contours from a smoothed 2D histogram, weighted by their associated number density. In all panels, we show the scaling relations for local Elliptical and Spheroidals (solid black line) (Reines & Volonteri 2015), high redshift galaxies (z ∼ 2.5) (Suh et al. 2020) (dash-dotted black line), and the relation for high-redshift (z = 4–7) AGNs using only JWST sources (Pacucci et al. 2023) (dashed black lines). Observations pre-JWST come from works of Pensabene et al. (2020), and the latest results from JWST from Maiolino et al. (2024), Harikane et al. (2023b), Yue et al. (2024), Bogdan et al. (2023), Rinaldi et al. (2025), Tripodi et al. (2025), Larson et al. (2023), Kokorev et al. (2023), Akins et al. (2025b) and Kovács et al. (2024).