β_UV/β_opt plane of the inner regions of the sample. The fraction of the mass outskirt is represented by contours with 0.4 and 0.8 levels, increasing from red to purple and blue. Redshift is indicated by a gray color bar. The LRD selection from Kocevski et al. (2025) is shown in the light gray dashed region and LRDs in common are shown in red stars. In the top right-hand corner, we show β_UV,inner as a function of redshift, the colorbar denotes the mass fraction of the outskirt f_outskirt, the shaded region refers to the V shape selection.