Merger histories of bulgeless (BL) and BD galaxies since z = 2. The left and right panels respectively depict the fraction of BL, BD, and PS galaxies as a function of the number of major and minor mergers. The merger histories of the samples exhibit a slight difference of no more than 4%, as approximately half of the galaxies in each sample have undergone at least one major merger since z = 2. The disparity is more pronounced in the case of minor mergers, with at least one minor merger occurring in 61% of the BL galaxies and 41% of the BD galaxies.