Density contours of the FWHM along with the SEDM and the new classified SNe used as test sample, are shown. The comparison sample is represented by SNe II as filled purple dots and SNe IIb as filled green triangles. Dark green circles correspond to SNe initially classified as type II but exhibiting SNe IIb-like properties. Open purple triangles represent SNe initially classified as type IIb but spectroscopically belonging to the SN II class. Pink squares denote type II SNe showing 87A-like characteristics. Yellow stars highlight type II SNe that appear to exhibit SNe IIb characteristics but lack sufficient data to confirm this classification.