Cubase 8 Pro and Mac Fonts

Hi,
In page text, and other text entries, I notice that Cubase 8 doesn’t always pick up fonts that I know are installed; for some fonts a substitution is made from the selected ones. There seem to be several font folders in El Capitan. Does Cubase read from any particular library and would that explain why it will not reproduce certain fonts missing from that library? What folders does Cubase use for fonts? Why would the fonts appear by name in the Cubase selection list, yet not be reproduced when selected?