Summary of the nearby H I–bearing host galaxies in this study. Data points show the distances versus halo masses of the host galaxies (Table 1), and in parentheses is the host count from the survey: WALLABY pilot (stars; T. Westmeier et al. 2022; C. Murugeshan et al. 2024), MHONGOOSE (pentagons; W. J. G. de Blok et al. 2024), and ALFALFA from J. Zhu & M. E. Putman (2023) (small circles; H I data from M. P. Haynes et al. 2018). Colors show the fractional halo coverage (R_cover/R₂₀₀; see Section 3.1). We excluded three MHONGOOSE hosts with the lowest projected halo coverages (R_cover/R₂₀₀ < 0.7; see the red crosses), which are intermediate-mass spirals with no gaseous satellites in their covered inner halos (NGC 625, NGC 7793, and NGC 5068).