Properties of the MATLAS dwarfs and their simulated TNG analogues. TNG dwarfs bound to their host galaxy are plotted in black, while those unassociated with their supposed host are drawn in blue. MATLAS dwarfs are shown in shaded grey. Absolute magnitude, M_g, and effective radius, R_e, require distance estimates to derive, while apparent magnitude, m_g, is a purely observational property. For the former two, estimates derived by assuming TNG dwarfs lie at their designated host galaxy’s distance are plotted in red. Of the MATLAS dwarfs, 15% have individual distance estimates. The M_g and R_e values calculated using these known distances are drawn as black dotted lines. The distribution of MATLAS dwarfs in M_g, m_g, and R_e generally lies between the bound and background population in TNG. We also estimate the fraction of MATLAS dwarfs physically associated to their field’s host galaxy, f_assoc, by averaging over TNG’s bound and background CDFs (green dashed line) with a ratio that minimizes the corresponding Kolmogorov-Smirnov statistic.