Star formation rate and stellar mass of the glSN Ia candidate lens galaxies (black), known glSNe Ia lens galaxies (red), and SLSNe-I (green), SLSNe-II (blue) and SNe IIn (grey) host galaxies. The lens galaxy of the glSN Ia candidates are similar to hosts of SLSNe-IIn and SNe IIn, suggesting that some glSN Ia candidates could be SLSNe-IIn. However, the masses are also consistent with previously observed galaxy lenses.