Distribution of the UDGs, LSBs, and the dIrrs in the M_B space with the UDGs, LSBs, and the dIrrs being represented by teal, yellow, and red colours, respectively. The empty and solid triangles on top of the plot represent the median M_B, respectively, of the parent populations and the samples considered in our work. The galaxies were chosen from the literature as follows (ordered as the increasing shade of the histograms): (1) UDGs: Leisman et al. (2017); (2) LSBs: Impey et al. (1996), Kniazev et al. (2004), and de Blok et al. (1996); (3) dIrrs: Hunter & Elmegreen (2006) and van Zee & Haynes (2006). The histograms with black outlines represent the samples considered in our study.