Thanks for checking! 
I figured it would work, but was taking a PDF vacation 
…and with the Minimal and AnuPpuccin themes (the only two I tested), custom Style Settings h1~h6 fonts are respected in the export. Yay!
This works if you use a different theme or one that doesn’t have Style Settings options. Add h2~ as necessary. !important is not an option here.
@media print {
body {
--font-text: 'Baoli SC' !important;
}
h1 {
font-family: 'SFMono-Regular' !important;
}
}