Comparison between CLOUDY-predicted R_Fe generated with different densities and R_Fe measured from observations. Models are colour-coded according to their ionisation parameters. The range of metallicities derived from narrow lines observed in JWST-selected type 1 AGNs is indicated by the vertical grey shaded region. Both low-density (n_H < 10¹⁰ cm⁻³) and high-density (n_H > 10¹² cm⁻³) models struggle to reproduce R_Fe of JWST-selected AGNs, especially the X-ray weak ones, which constitute the majority of the sample.