Hello,
I find perfect font for Openmpt https://fonts2u.com/modern-dos-8x16.font (https://fonts2u.com/modern-dos-8x16.font)
font.jpg
Even more vintage PC fonts can be found here: https://int10h.org/oldschool-pc-fonts/download/
I use UnifontEX (my improvement of GNU Unifont, which I threw in the open-source software stickied post, but it's on my Github (and SourceForge, among other places) if you want.