Luminosity of GRB-SNe (given in luminosity versus the luminosity of an SN 1998bw template, k) versus their peak time (given in stretch versus the light curve of an SN 1998bw template, s). SN 1998bw is per definitionem at (k, s = 1, 1). These (k, s) values are derived from observer-frame filter fits given in the legend (and color-coded), which are close to the rest-frame g′ filter; hence, they are all roughly comparable. The right-hand scale in absolute magnitude is therefore not completely precise. We highlight several luminous GRB-SNe. The SN bump associated with GRB 140506A stands out strongly but represents an extension of the luminosity-duration correlation that has been discussed in the literature (e.g., Schulze et al. 2014; Cano et al. 2017; Klose et al. 2019).