Fig. 2.

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Collection of non-normal ZTF SN Ia DR2 and their spectra, compared with spectra of the normal SN Ia 2011fe from Pereira et al. (2013) and their matched peculiar sub-types: SNe Ia-CSM (PTF 11kx; Dilday et al. 2012), 03fg-like (SN 2009dc; Taubenberger et al. 2011), 91T-like (SN 1991T; Mazzali et al. 1995), SNe Iax (SN 2005hk; Blondin et al. 2012), 02es-like (SN 2006bt; Foley et al. 2010), 18byg-like (SN 2018byg; De et al. 2019) and 91bg-like (SN 1991bg; Filippenko et al. 1992). We additionally mark the time from maximum (in rest-frame days) of each spectrum, with the exception of SNe Ia-CSM, where we mark the time from explosion.
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