Visual impression of the three origin sources of z = 0 cold CGM gas clouds. The white circle marks the virial radius of this GIBLE halo (S105; M_200c ∼ 10^12.29 M_⊙; see Table 2 of Ramesh & Nelson 2024 for more details). Of the many thousand clouds in this CGM, most came to existence in the recent past (≲2 Gyr). A majority of these can be traced back to cold gas that was previously present in the central galaxy (white). On average across the sample of eight halos, these form ∼40–60% of the z = 0 population. A small fraction of clouds (∼3–5%) arise from satellites as they spiral in toward the center of the halo (orange). Colored in blue, most of the remainder of the clouds are formed through the in-situ condensation of hot halo gas. These account for ∼15–50%, depending on cloud mass. This simple visualization suggests that the inner regions are dominated by white clouds, while their blue and orange counterparts are situated farther out in the halo. This radial distribution is typical, as we expand upon in subsequent figures.