As usual, the default Fonts settings will work fine.  But you can really individualize a book/section/chapter by choosing different font, size or style for a particuler kind of data/  For example, you may choose to use something different for Given Names and Surnames to make them stand out. I would suggest that if you do, the change in size not be significantly larger.  Keep in mind that a different font and larger size may only be slightly larger than the remailing text.  Note that the default has only one difference.  Two or three difference may be too much and not worth it most times.  Other times, you might have five or six differences.  Try it and see.  If the page is too “busy” and hard to read, select fewer differences.