Posterior distribution for the JWST/NIRISS retrievals of HAT-P-18 b (gold), WASP-39 b (red), and WASP-96 b (blue) using the Lee et al. (2013) cloud model. The bottom left corner plot shows retrieved posterior distributions for the free chemistry retrievals. The top right inverted corner plots show the FRECKLL retrievals. To enable comparison, we also compute (bottom) the elemental ratio probability densities by postprocessing the free chemistry runs. For these, we indicate reference Solar-system values. The values for Jupiter are computed from Atreya et al. (2022); the values for the Sun are from Asplund et al. (2009); and the values for the stars HAT-P-18 and WASP-39 are from the Hypatia catalog (Hinkel et al. 2014). Note that the reference abundances for Na and K in Jupiter are not available, due to the condensation of those species. Here, we estimate those values by using S/H as a proxy for Na and K enrichment (i.e., we assume S is a good tracer of refractory elements). Stellar elemental ratios for WASP-96 are not available.