MVT-T₉₀ plane, with MVT defined as FWHM_min (adapted from Maccary et al. 2025). The filled circles represent the type-I GRB candidates (sample S₀) identified in the present analysis. The blue and red crosses indicate short (T₉₀ < 2 s) and long (T₉₀ > 2 s) GRBs, respectively. Gold points represent SN-associated GRBs. Magenta, lime, and cyan points represent SEE-GRBs from Lien et al. (2016), Lan et al. (2020), Kaneko et al. (2015), respectively. Three extragalactic magnetar giant flare candidates, 180128A, 200415A, and 231115A are shown in brown. The solid black line represents the equality line, while the dashed, dashed-dotted, and dotted lines represent a factor of 10, 100, and 1000 respectively, deviation from equality.