Abundances by mass fraction X compared to observations of two helium-rich hot-subdwarf stars LS IV −14 116 (Dorsch et al. 2020), EC 22536−5304 (Dorsch et al. 2021). These stars have two different suspected evolutionary origins (see text). Abundances of LS IV −14 116 and EC 22536−5304 include preliminary values obtained from HST far-UV spectra (Dorsch et al. 2022), which will be described in detail in a future paper. Solar abundances from Asplund et al. (2009) and updated by Grevesse et al. (2015) are shown for comparison.