Results of the fit for different parameters of the models as a function of the stellar mass. Top panels: gas fraction (left) and stellar scale length (right). Middle panels: scale length ratio between the gas and stars (left) and scale length of the stellar bulge (right). Bottom panels: bulge index (left) and bulge mass fraction (right). Colour circles show the actual fits (see the text in Sect. 2.2 for details) to the PHANGS-ALMA sample, while the selected values for our used initial conditions (IC(models)) are shown with purple stars.