All SEDs (unobscured and obscured) assigned to AGN in this work, normalised at 1 μm. The redshift evolution of the effective wavelength for each Euclid filter over the redshift range probed in this work are depicted below as black lines. The seven SED classes in this figure are: Unobscured AGN (‘Unobsc.’; blue), Passive (‘PASS’; pink), Star-forming (‘SFG’; brown), Starburst (‘SB’; purple), High-luminosity obscured AGN (‘QSO2’; orange), Seyfert 2 (‘SEY2’; green), and Starburst-AGN composite (‘SB-AGN’; red).