Color-color space distribution of RUBIES sources with robust z_spec > 3.1 (gray histogram). We divide the sample into z_spec < 5 (right) and z_spec > 5 (left) and show the NIRCam F090W−F150W vs. F200W−F356W and F115W−F200W vs. F277W−F444W, respectively, which approximately probe rest-UV vs. rest-optical colors. In the top row we plot objects that satisfy our condition for broad-line, unresolved, and v-shaped features, along with their combinations, above the full distributions of the parent sample in each redshift regime. In the bottom row we plot the objects that satisfy all three criteria. Each panel includes the total number of objects shown and the fraction of the represented sample. The points are colored as in Figure 7.