Posterior distributions of the Hubble constant as well as parameters that describe the CBC mass distribution for the Flexible-CBC, Fullpop-PS, and Fullpop-4.0 models. The four peaks are the local maximum points of the cubic spline function for the Flexible-CBC and Fullpop-PS. Note that peak1 and peak3 are for the center values of the two Gaussians (﹩{\mu }_{{\rm{g}}}^{{\rm{low}}}﹩ and ﹩{\mu }_{{\rm{g}}}^{{\rm{high}}}﹩) defined in Fullpop-4.0 (The LIGO Scientific Collaboration et al. 2026c). The parameters labeled m_peak correspond to the local maxima derived from the (POWERLAWSPLINE) mass function.