Recreation of Fig. 1 from Angeloudi et al. (2024), showing the average contributions of ex situ and in situ stellar mass for 10,000 MaNGA galaxies in different stellar mass bins, as predicted by the diffusion model. Solid lines indicate the new measurements derived from the aggregated 2D predicted maps. For reference, the previous 1D predictions from Angeloudi et al. (2024) are shown with dashed lines. The main trends remain consistent between the two works and are in agreement with independent studies of individual galaxies.