Final calibrated set of DARKSKIES CDM clusters. In each panel, we show the zoom-in, super-sampled clusters with CDM in black stars. Specifically, top left: Gas fraction inside r₅₀₀ as a function of the halo mass M₅₀₀, top right: Stellar fraction inside r₅₀₀ as a function of the halo mass M₅₀₀, bottom left: Projected half-mass radius of the central galaxy (considering all stars inside 100 kpc) as a function of projected stellar mass within 100 kpc, bottom right: Projected stellar mass within 100 kpc as a function of halo mass. The Flamingo HST Data corresponds to a collection of gas mass estimates collated by the Flamingo team (Hoekstra et al. 2015; Eckert et al. 2016; Akino et al. 2022; Lin et al. 2012; Lovisari et al. 2015; Sun et al. 2009; Vikhlinin et al. 2006). The solid line in each case shows the best fit, and the regions show the 68% and 95% representing the one and two standard deviation confidence limits around this fit.