Continuum-subtracted spectral composites of the low-luminosity (left) and high-luminosity (right) subsamples. The Hβand [O III] narrow components have been cut for visualisation purposes. In the right panel we also show the composite quasar spectra for the high-luminosity subsamples. In the case of the Deconto-Machado et al. (2023) sample we built different composite spectra for the Pop A and Pop B sub-samples, which occupy different regions of the EV1 plane. The iron bump between 4434–4684 Å (green shaded area) is evidently weaker in the JWST low-luminosity sample than in the local AGNs. Although the strength of the Fe II bump seemingly varies among the sub-samples, the R_Fe of the quasars at the epoch of reionisation analysed here is not significantly different from those estimated at lower z as also shown in Table 2.