Pressure–temperature profiles for TOI-1431 b and TOI-1518 b adopted in this work, shown in red and blue, respectively. The horizontal dashed lines and bands show, in the same per-planet colors, the estimated pressure of peak of the contribution function and 68% contribution range for the Fe I emission spectrum, as calculated by petitRADTRANS. We emphasize that these are estimated P-T profiles produced by a manual grid search to maximize SNR and not robust measurements of the profiles.