Photometric and structural parameter distributions for the simulations. Density clouds represent the parameter distributions of the 10 000 3D simulations of realistic bulge + flared disc light distributions created from the observations as a function of the morphological type, T. Dots represent the observations from Graham (2001), Kregel et al. (2002), Bizyaev et al. (2014) and Mosenkov et al. (2015). Upper row, from left to right: disc absolute magnitude M_abs,disc, disc central surface brightness μ₀, disc scale length h_R, bulge-to-disc ratio B/D, and disc radial-to-vertical scale-lengths ratio h_R/h_z. Lower row, from left to right: bulge absolute magnitude M_abs,bulge, bulge surface brightness at the bulge effective radius μ_e, effective radius r_e, bulge Sérsic index n, and the radial gradient of h_z, ∇_Rh_z. The green diamond represents the MW.