Relations between baryonic and halo mass in our sample. The left panels show M_bar vs. M₂₀₀, while the middle and right panels show ${\stackrel{\sim }{f}}_{\mathrm{bar}}$ as a function of M₂₀₀ and M_bar, respectively. The observations are colour-coded by the M_gas/M_bar ratio. All panels highlight the cosmological baryon fraction f_{bar, cosmic}. The bottom panels also include comparisons with TNG50 (cyan) and Simba (orange) galaxies. The bottom panels highlight with squares those galaxies with M_* lower than abundance-matching expectations by more than an order of magnitude.