LaTeX or TeX would be excellent choices if you want good typographic control, though there's a significant learning curve if you're going to produce beautiful b

LaTeX or TeX would be excellent choices if you want good typographic control, though there's a significant learning curve if you're going to produce beautiful books. Check out https://www.ctan.org https://www.ctan.org to start learning more. They have lots of book publishing resources: https://www.ctan.org/topic/book-pub https://www.ctan.org/topic/book-pub