Relative mass fraction of disk structures of tiny-halo (blue) and halo-subdominated (red) galaxies, measured using morphological f_{disk, morph} and kinematic f_{disk, kinem} methods. The morphologically defined disks are generally 10% larger than those defined in the kinematical method from Du et al. (2019, 2020). The envelopes of shaded regions represent the 16th and 84th percentiles and the solid profile is the median value.