HRD of all our calculated models at the end of core-carbon burning compared to observed supernova progenitors. Symbols show initial masses, and colors indicate different convective core overshooting values. Symbols with black edges are models that are expected to collapse into BHs. As in Fig. 13 the grey shaded region shows the missing RSG region. Red star symbols represent the observed SN IIP progenitor stars, with uncertainties in log(L/L_⊙) and log(T_eff/K) from Smartt (2015). The red triangles show the upper limits in the luminosity of the observed SN IIP progenitors from Smartt (2015) for which effective temperatures are not known. The red star symbol with blue and black edges shows the SN 2023ixf progenitor from Kilpatrick et al. (2023) and Jencson et al. (2023) respectively. The blue star symbols indicate the observed progenitor stars of type SN IIb as compiled in Yoon et al. (2017). The blue star symbol with red edges indicates the SN 1987A progenitor by Woosley (1988).