Median, first, and third quartile of simulated stellar half-mass radii, R_{0.5 stellar}, of dispersion-dominated (κ_rot <  0.5) objects and 3D deprojected half-light radii, R_0.5 light, of observed early type galaxies for different stellar mass bins (10⁷−10⁸ M_⊙, 10⁸−10⁹ M_⊙, 10⁹−10¹⁰ M_⊙, 10¹⁰−10¹¹ M_⊙, and 10¹¹−10¹² M_⊙). Blue right triangles are DM-rich stellar objects, purple crosses are DM-poor stellar objects, green dots are DM-rich DGs, magenta squares are DM-poor DGs, and red triangles are TDGCs (see Table 3). Gray open circles are observed early-type galaxies taken from Dabringhausen & Fellhauer (2016). The yellow star shows the position of NGC 1052-DF2 with M_stellar = 2 × 10⁸ M_⊙ and a 3D deprojected half-light radius of 2.7 kpc (van Dokkum et al. 2018a). The medians of simulated and observed galaxies for different mass ranges are listed in Table 7.