The typefaces in the system font list are not just for humans. They are also used by computers, which makes it important that they have high legibility and readability. The research on how well these typefaces perform when shown to non-native readers is still ongoing, but so far no studies have found any reason to change the current selections.
Is there a web page where I can see all of the fonts currently installed in Ubuntu?
This Fonts section includes reference links to various places you can find information about graphics issues or learn more about specific fonts. If you need further help finding detailed font descriptions online, please refer to this link for instructions on how to install an additional web browser called lynx . It will allow you access tools like Lynx Browser that provide full screen line editing capability along with browsing capabilities for viewing character tables and other related information about individual characters or type families (fonts). You may even be able to use it while looking at your desktop background!