Γ–Log(λ_Edd) plane. Highly accreting samples are labelled as indicated in the legend. Circled sources have a fixed Γ in their X-ray analysis. The black continuous line represents the best fit from Liu et al. (2021), which produced a slope β = 0.27 ± 0.04, while the dashed line represents the 1σ dispersion. The dot-dashed line is our best fit including all the samples (except the sources from Trakhtenbrot et al. 2017, for which there was no information about possible X-ray weak sources), which results in a flatter slope β = 0.16 ± 0.03.