Comparison among the number of sources selected as AGN candidates for the different criteria investigated in this work per EDF. We exclude the morphology-based AGN candidates from SG25 and MB25 due to the significant differences in their methodologies compared to other techniques explored in this work. X-ray candidates correspond to those sources from RW25 and PRF correspond to the purified sample from TM25. We set the detection limit to the range of 18 < I_E ≤ 22, ensuring all selections match in depth. We note that EDF-N shows more selection criteria than EDF-S and EDF-F due to the available u-band photometry from UNIONS and spectroscopy from DESI in the EDF-N.