Comparison of classification performance across different sub-classes of LSNe Ia systems using ROC curves. The left panel compares doubles and quads, while the right panel shows results for systems grouped by angular separation, highlighting the impact of image separation. Results at the 1st, 3rd, 7th, and 14th observation epochs are shown in blue, green, purple, and orange, respectively, in both panels. In the left panel, solid, dotted, and dashed curves of a given color represent all LSNe Ia, doubles, and quads, respectively; in the right panel, the same line styles denote the three θ_E bins at the corresponding observation epoch.