Notes. In Col. 1: the name of the BGG-BCG and Col. 2: the environment in which the target lies. Columns 3 and 4: the celestial coordinates of the group-cluster center. Column 5: the distance of the BCG. Columns 6 and 7: the magnitude and luminosity of the ICL component, in the g band, respectively (from our work). Columns 8 and 9: the virial radius and virial mass inside the virial radius, respectively. Column 10: the fraction of the ICL component with respect to the total luminosity of the group-cluster in the g band. Column 11: the fraction of the ETGs with respect to the total number of galaxies, taking into account the brighter galaxies studied in each system. All the magnitudes listed in the table are corrected for Galactic extinction using the extinction coefficients provided by Schlafly & Finkbeiner (2011). To compute the L_⊙, g, we use the prescriptions from Blanton et al. (2003), with M_⊙, g = 5.45 mag. For the M_vir (R_vir), we assumed the following values: NGC 3923, NGC 4636, and NGC 5044 from Brough et al. (2006); NGC 6868, NGC 596/584, NGC 3640, NGC 4697, and NGC 5846 from Gourgoulhon et al. (1992); NGC 4365 from Samurović (2014); HCG 86 from Coziol et al. (2004); NGC 3379 from Karachentsev et al. (2015); NGC 3258, NGC 3268, and the Antlia cluster from Calderón et al. (2020); NGC 3100 from (Tempel et al. 2016); and NGC 1453 from (Pandya et al. 2017). To estimate all the distances of this work, we used the heliocentric radial velocity, given by NED (NASA IPAC Extragalactic Database) and H₀ = 73 km s⁻¹ Mpc⁻¹ (Riess et al. 2018).