A more detailed description of how galaxies with different stellar masses are distributed across the SOM. Upper panel: Average log(M_LePh/M_⊙) of COSMOS2020 galaxies within the same cell, coded according to the color bar above the SOM grid (white cells are empty). Upper panel: Standard deviation of the same log(M_LePh/M_⊙) distribution per individual cell, coded according to the color bar above the SOM grid (also in this case, empty cells are colored in white).