Models for the bolometric light curves of SNe 2018jmt (blue triangles) and 2019cj (red circles). The models shown here assume M_ej = 2 M_⊙, resulting in E_K = 1.6 and 1.9 × 10⁵¹ ergs for SNe 2018jmt and 2019cj, respectively. The CSM parameters are as follows; for the outer components: (s, D′) = (2.6, 4.2) for SN 2018jmt (blue), and (2.8, 4.4) for SN 2019cj (red); for the inner components: (s, D′) = (0.0, 1.0) for SN 2018jmt (cyan), and (0.1, 0.8) for SN 2019cj (magenta). The thick-dashed curve is the expected contribution from the ⁵⁶Ni/Co decay with M(⁵⁶Ni) = 0.15 M_⊙ taking into account the optical depth to the decay γ-rays adopting M_ej = 2 M_⊙ and E_K = 1.6 × 10⁵¹ erg (for SN 2018jmt), which sets the upper limit for M(⁵⁶Ni). The same curve but with M(⁵⁶Ni) = 0.08 M_⊙ is shown by the thin-dashed line, for the case adopting M_ej = 4 M_⊙ and E_K = 2.3 × 10⁵¹ erg.