SFR as a function of stellar mass (left) and absolute magnitude (right) for our simulated supermassive disk galaxies compared with observational samples. In the left panel, our galaxies are compared with the supermassive galaxy sample from Ogle et al. (2019) (orange crosses). In contrast, the right panel shows a comparison with the LSBGs from O’Neil et al. (2004). Most observational galaxies lie along the star-forming main sequence, whereas our simulated sample includes both star-forming and quiescent systems, highlighting their broader diversity in star formation activity.