Scatter in the M_UV−M_h relation, represented as σ_UV, as a function of redshift. The blue points with errorbars mark σ_UV at the median redshift of our three line emitter samples, while the blue line and envelope mark the best-fit and 1σ uncertainty as a linear function of redshift. From the literature compilation, the colored boxes at the right axis show the σ_UV for a range of M_h independent of redshift from the FIRE and FIREBOX^HR simulations (Sun et al. 2023; Feldmann et al. 2025). For Muñoz et al. (2023), we show the 1σ contours for σ_UV obtained for independent z-bin fits; while the dashed purple line shows their best-fit linear function with redshift. For Ciesla et al. (2024) we show results from two different methods in the filled and empty squares.