Probability density distribution of inclination-corrected N_HI values (left panels) and second moment values (right panels) for MeerKAT (blue), TNG50 (orange), and FIRE-2 (dark red curves) galaxies. The HR and LR cases are shown in the top and bottom panels, respectively. The solid lines show the median distribution for a given galaxy sample, while the shaded regions show the scatter within the sample, computed as the difference between the 84th and 16th percentiles.