Composition profiles at the start of our simulations in our model set (2 days post explosion for the toy models and ~1 day post explosion for the DDC models). For the toy models, this represents the full set of species present (⁵⁶Ni and decay products ⁵⁶Co and ⁵⁶Fe, as well as IMEs: Ca S, Si), while for the DDC models only a subset of species are shown for illustration. The ⁵⁶Ni mass fraction is given at the time of explosion. We also show the total IGE mass fraction (from Sc to Ni; dashed line) and the total IME mass fraction (from Na to Ca; dotted line). The total IGE mass fraction coincides with the ⁵⁶Ni₀ line in the toy models and is not shown for sake of clarity.