How to turn off "Font Class" in Character > Font drop down menu

Just began working in the latest version of Photoshop (25.7.0) and when I click in either the ribbon font list or in the character panel font list, there's a left rail of font classes. I can't find the option to turn that font class list off. It takes up way too much space on my screen and I don't need it. Please tell me there's an option to turn it off. Also, it's not in dark mode, which is problematic as well. 

Using a Mac version of Photoshop.