Estimated periods of radial velocity variability as a function of RV_PP (top panel) and the Roche-lobe filling factor (bottom panel) for the entire sample of BSGs together with their spectroscopic binary status. We colored only the targets with the FAP below the 0.1% of FAP level. All detected eclipsing binaries are marked accordingly. The blue-shaded area represents the region where orbital periods and spectroscopic binary classification for all BSGs are well-constrained given the limitations of available data. The red-shaded area (bottom panel) indicates the non-bonafide region in terms of estimated orbital periods (< 2 days) and Roche-lobe filling factor (R₁/R_RL > 1.5).