Model predictions for the O3 detected BBH population of CE and SMT channels combined for α_CE ∈ [0.2, 0.35, 0.5, 1.0, 2.0, 5.0] and η_acc = 1, in orange. We show the joint distributions of chirp mass M_chirp, effective inspiral spin parameter χ_eff and binary mass ratio q. Lighter colours represent larger contour levels of 68%, 95% and 99%, respectively, constructed with pygtc (Bocquet & Carter 2016). All histograms are plotted with 30 bins without any bin smoothing. We overlaid in grey the LVC GWTC-2 data with their 90% credible intervals. The 9 events of GWTC-2 in tension with our models are indicated in red (see Sect. 3.3). We also show the one-dimensional projection of each quantity overplotted on the underlying (intrinsic) BBH population, in grey. For visualisation purposes, the χ_eff probability density function (pdf) is plotted in log-scale. For a visualisation of each model separately see Appendix G.