fonts.fontconfig.defaultFonts.emoji

System-wide default emoji font(s). Multiple fonts may be listed in case a font does not support all emoji.

Note that fontconfig matches color emoji fonts preferentially, so if you want to use a black and white font while having a color font installed (eg. Noto Color Emoji installed alongside Noto Emoji), fontconfig will still choose the color font even when it is later in the list.