Mass fraction of stellar components. Upper panel: Mass fractions of the spheroidal component f_sph as a function of galaxy stellar mass M_gal. Lower panel: Mass fractions of the discoidal component f_dsk as a function of galaxy stellar mass M_gal. In both cases, the crosses with black solid line represent the original f_sph or f_dsk values for the nine equilibrium galaxies built using the AGAMA code (Vasiliev 2019) and the circles with a solid line show the f_sph or f_dsk values recovered with each of the six dynamical decomposition methods used.