Hertzsprung-Russell diagram with the expected positions of the final state of the stars, before core-collapse. Successful FeCC explosions for each track (according to the SN prescription by Patton & Sukhbold 2020) are depicted with a star, implosions into a BH with probably no transient with a square, and ECSNe with plus signs. Contours represent the positions of the FeCC events only, with different colors representing the different RSG mass-loss prescriptions. We also show the position of the detected type II SN progenitors from the compilation of Farrell et al. (2020a).