NIRCam and MIRI photometry compared with different red SED objects. Grey squares and black circles represent the NIRCam+MIRI observed and continuum-only (see Sect. 4.1) fluxes, respectively. Coloured lines represent the SEDs for different AGNs types and high-z objects with optical-red colours presented in Sect. 4.1. The red line represents the stacked spectra for ∼150 local and high-z LRDs (Pérez-González et al. 2024; Pérez-González et al., in prep.). The brown line displays the spectra from the exotic z ∼ 3.5 LRD The Cliff, while brown diamonds represent its re-normalised fluxes from de Graaff et al. (2025) at rest- 0.9 and 1.9 μm. The blue line shows the COSMOS-Webb median-stacked LRD SED model presented in Akins et al. (2025). The orange and purple lines show the z ∼ 1 QSO composite spectrum, created by combining the UV+optical and near-IR spectral templates from Selsing et al. (2016) and Glikman et al. (2006), and the NIRSpec+MRS spectrum for the z = 7.1 QSO J1120+0641 (Bosman et al. 2024, 2025), respectively. The HST/STIS spectrum for the Sy2 Mrk3 presented by Spinelli et al. (2006) is displayed as a green line. All observed spectra have been redshifted to z = 10.6 and normalised at 4800 Å.