C/O versus Mg/Si, the abundance ratios by number, for our sample of stars. The critical value of Mg/Si = 1.0 and C/O = 0.8 (Bond et al. 2010b; Suárez-Andrés et al. 2018) are indicated by the vertical and horizontal brown dashed lines, respectively. The stellar abundances (and their statistical uncertainties) are from Brewer et al. (2016), and the solar ratios (and their error bars) from Asplund et al. (2021), referred to as ‘Sun A21’, are shown for reference. The solar ratios based on abundances from Brewer et al. (2016), referred to as ‘Sun B16’, are also shown, as they are this catalog’s intrinsic solar abundances used to convert differential abundances to absolute abundances in Timmermann et al. (2023).