Median evolution of spin parameter, the ratio of the angular momentum of the disc over the halo, and the disc mass fraction (solid thicker lines). From left to right, different galactic wind models (top Fig.) and BH physics models (bottom Fig.) are shown. The rightmost column corresponds to the original galaxy in TNG50. Thinner solid lines correspond to individual haloes. Vertical solid lines and shaded regions represent the median redshift and the distribution between 20^th and 80^th percentiles of the bar formation time. The angular momentum and mass of the disc with respect to the halo are smaller with stronger SN feedback. As the ELN criterion, the MMW criterion demonstrates the essential condition of the early buildup of a massive disc to favour bar formation. However, it is insufficient as it fails to predict stable discs in the NW model.