Absolute magnitude vs. light curve shape diagrams populated with the Carnegie Supernova Project SN Ia sample (Contreras et al. 2010; Stritzinger et al. 2011; Krisciunas et al. 2017; Ashall et al. 2021; Phillips et al. 2022), along with members of known SN-Ia subtypes, a handful of 2002es-like objects, and ASASSN-20jq. References for the expanded comparison sample are provided in Sect. 4.6. The left panel relates the peak absolute B-band magnitude (M_B) to the light curve shape parameter Δm₁₅(B) (Phillips 1993), while M_B is plotted in the right panel vs. the color-stretch parameter, s_BV (Burns et al. 2014).