Best-fit SEDs and redshift probability distributions P(z) obtained with the procedure described in Sect. 5 for the UHR galaxy candidates and their median stack. The top section of each panel shows 1.5″×1.5″ NIRCam cutouts of the source. The left inset displays the observed photometry (black circles) with 1σ upper-limit uncertainties (black triangles). The Bagpipes best-fit SED at z > 8 is shown in red, with its 0.1 dex confidence interval (shaded red area), while the best-fit SED at z ≤ 8 – obtained independently over the same full prior range – is shown in gray. The right inset reports the normalized redshift probability distributions from different SED-fitting codes: the P(z) of the Bagpipes model that minimizes χ² at z > 8, shown in red over the full prior range (0 ≤ z ≤ 25); the CIGALE posterior (dashed yellow line); and the mean EAZY posterior averaged over all templates described in Sect. 5 (purple). The vertical dashed black line marks the z = 8 threshold.