There are the STIX fonts at:
https://sourceforge.net/projects/sti...st%20Releases/
Install the four STIX-*.otf opentype fonts from STIXv1.1.1-latex.zip
I don't think these are exactly ideal for e-ink screens because they have a mix of thick and thin stroke widths, and such fonts seem be more affected by ghosting than those with a more uniform stroke width. Also the line spacing is very wide (maybe adjust with fontforge, or install linespacing firmware patches). But they work okay.