The ﹩{E}_{{\rm{iso}}}^{{\rm{rad}}}﹩ vs. E_peak diagram. The blue solid and orange lines show the Amati relation for the SGRB (Type-I GRB) and LGRB (Type-II GRB) populations, adopted from Y. Liu et al. (2025). The dark- and light- shaded regions indicate the 1σ and 3σ confidence intervals, respectively. The magenta point marks GRB 170817A. Colors represent different models, while the circles (θ_v = 10^∘), squares (θ_v = 20^∘), diamonds (θ_v = 30^∘), and stars (θ_v = 45^∘) denote different viewing angles.