Comparison of the lithium 6707.8-Å region for our sample stars. We show the phase-combined spectra. The short vertical dashes indicate the wavelengths of blending lines. The bottom row of dashes shows the line list from Strassmeier & Steffen (2022), the middle row shows the strongest CaH and TiO lines from the solar umbral atlas, and the upper four dashes indicate the two ⁷Li and ⁶Li doublets, respectively. The x-axis is the wavelength in Ångstroem.