Scatter plot of FWHM_min and T₉₀ for the Swift/BAT sample (left panel) and for the Insight-HXMT sample (right panel) along with the corresponding marginal distributions for three distinct populations of SGRBs (blue), LGRBs (red), and SEE-GRBs (green). Gold points are LGRBs with an associated SN. We highlight two SEE-GRBs, 060614 and 211211A, for which there is strong evidence of a binary merger rather than a collapsar origin. Cyan points refer to the Insight-HXMT saturated GRBs. We highlight 190114C and 221009A because of their high extreme energy (MAGIC Collaboration 2019; Frederiks et al. 2022). We do not consider Swift data where T₉₀ < σ_T90. Solid, dashed, dash-dotted, and dotted lines represent the equality, 10¹, 10², and 10³ factor, respectively.