Left: Redshift vs. NIRCam F356W (for z_spec ≤ 5) or F444W (for z_spec > 5). Right: Absolute UV magnitude (M_UV) at 1500 Å, derived from rest-UV spectroscopic slopes, is plotted against total, narrow plus broad, Hα luminosity. RUBIES sources with robust z_spec > 3.1 are shown as a gray histogram. Broad-line sources are indicated with dark red circles, and LRDs, defined as galaxies with v-shaped continua, broad Balmer lines, and dominant rest-optical point sources, are shown as light red hexagons. At fixed L_Hα, LRDs are faint in the rest-UV compared to the full population. Conversely, extreme Hα emitters (L_Hα ≳ 10¹⁰ M_⊙) are dominated by LRDs, i.e., LRDs constitute the most luminous Hα emitters at fixed UV luminosity.