Summary of the retrieved properties for our 12 targets. The targets are sorted by order of increasing companion mass. Each row reports on the retrieved C/O ratio, metallicity [Fe/H], effective temperature T_eff, surface gravity log(g), and planetary radius R for each target. The colour-coded error bars correspond to the different forward models considered in this study and indicate the 16th, 50th, and 84th percentiles of the posterior distributions. The light blue violin plots refer to the adopted value and uncertainty for each parameter and were calculated by taking the mean and standard deviation of the posterior medians of the different models. If they were available, the dotted red lines and shaded areas denote the latest literature values and corresponding uncertainties reported in Tables A.1 and A.2. As discussed in Sect. 3.3, some models are not applicable to some targets, hence the missing error bars for some targets.