Top panel: core and bulk metal mass fraction 1σ estimates obtained by our joint retrievals (JR1-JR6). Joint retrievals that take into account the age have triangle markers. Interior-only retrievals (R1–R3 and R5) are shown as colored boxes for comparison. Bottom panel: atmospheric metallicity and C/O ratio estimates from our suite of joint retrievals. Spectra-only estimates are displayed as colored boxes for comparison.