Γ vs. log λ_Edd for the high-λ_Edd QSOs in our sample (blue triangles). Two sources, J0300–08 and J1245+33, are excluded since their Γ were unconstrained by XMM-Newton data. J0940+46 and J1127+11 are described by the same point since they share the same values of Γ and λ_Edd. Solid, dashed, and dash-dotted black lines indicate the expected relation from other studies. Gold diamonds represent the sample of PG QSOs from Piconcelli et al. (2005). Green squares and red circles indicate the sub- and super-Eddington (i.e. λ_Edd ≥ 0.3) AGN from Liu et al. (2021), respectively.