Notes. For P_δ^fid(k, z) in this ΛCDM setting, we employed an updated version of halofit (Smith et al. 2003; Takahashi et al. 2012). The reference assumes a flat cosmology, this means Ω_Λ = 1 − Ω_m. A_IA: IA amplitude of the NLA model; Ω_m: (total) matter density parameter; Ω_b: baryon density parameter; n_s: shape parameter of the primordial power spectrum; h: Hubble constant in units of 100 km s⁻¹ Mpc⁻¹; σ₈: normalisation of the linear power spectrum at z = 0; Γ: shape parameter according to Sugiyama (1995); w₀: equation-of-state parameter for dark energy; ^( † )this value has been lowered from the 0.76 in Heymans et al. (2021), Table C.1, to obtain an average of ${\overline{f}}_{\delta }\approx 1$ over all k and z (Sect. 5.1).