While I’ll work with any WordPress theme and ever some other publishing platform my favorite tool is Divi from Elegant Themes. Divi has a number of fonts that come as part of the base package and if you’re wondering what they look like here they are all in one place.
Divi Fonts Preview – Divi Theme Examples
Divi 2.4 comes pre-packaged with 86 unique fonts as default so you should be able to find a font that works well with your Divi theme design. Below are the Divi fonts with a H2 heading, bbold, italic and a bit of lorem ipsum.