Simplicity fraction (f_simple) as a function of r′-band magnitude for this work (FDS, blue), SMAKCED (orange), and S⁴G (green) galaxies. Numbers alongside the solid lines denote the sample size per bin. We also include upper and lower limits (grey) based on RFF from FDSDC for comparisons. A bin size of 1 mag was used for FDS, SMAKCED, and S⁴G. The shaded regions denote the 95% confidence interval (same as in Fig. 19).