DM fraction at effective radius (f_DM(R_e)) as a function of redshift. The f_DM(R_e) of individual CRISTAL disks (4 < z < 6) are represented by small diamonds, colour-coded by their V_circ(R_e). For comparison, we include lower redshift studies around z = 2 from Wuyts et al. (2016) (grey box-and-whisker) and the best-fit relation to the RC100 data set (Nestor Shachar et al. 2023) (black solid line for the redshift range covered and dashed line for the extrapolated range). For both observational studies, we consider only SFGs on the MS and the baryonic mass M_bary matched within 0.3 dex of the CRISTAL disks. The new best-fit relation to RC100, using the M_bary-matched sample, is shown in the legend. The trends predicted from the TNG100 simulation for M_* = 10¹⁰ M_⊙ and M_* = 10¹¹ M_⊙ are shown in yellow and blue, respectively (Lovell et al. 2018). Overall, the CRISTAL disks tend to be baryon-dominated on galactic scales, with a median DM fraction of ∼18% (large green diamond) that is tentatively consistent with the extrapolated relation based on RC100. However, there is a significant scatter in the values among the sample, partly driven by the scattered distributions of circular velocity V_circ(R_e) (and Σ_bary) shown in Figure 12.