⟨μ_eff⟩–luminosity diagram of the early-type galaxies in the central region of the Virgo cluster (Smith Castelli et al. 2013), showing the location of the LSB galaxies presented in this work, assuming they are at the distance of Pegasus I. For comparison, we also include different samples of LSB galaxies, dSph galaxies, and UDGs reported in the literature. They are listed in the right margin of the plot according to their distances or those of the environments towards which they were detected, in ascending order from top to bottom. They are: Local Group dwarfs (McConnachie 2012), Centaurus dSphs (Müller et al. 2017), M 83 LSB galaxies (Müller et al. 2015), M 101 dwarfs (Bennet et al. 2017), Leo I dSphs (Müller et al. 2015), Virgo LSB galaxies (Mihos et al. 2015; Prole et al. 2018), Fornax LSB galaxies (Venhola et al. 2017), HCG 44 LSB galaxies (Smith Castelli et al. 2016), Isolated dSphs (Makarov et al. 2015), Isolated LSB galaxies (Greco et al. 2018), NGC 5044 dE/dS0 and dSph galaxies (Buzzoni et al. 2012), Pegasus I LSB/UDGs (Shi et al. 2017), Coma UDGs (van Dokkum et al. 2015), Pegasus II UDGs (Shi et al. 2017) and Abell 168 UDGs (Román & Trujillo 2017a). The lines of constant r_eff are only valid for exponential profiles.