Within Adobe Express projects, all fonts available at fonts.adobe.com can be used. However, for making brands in Adobe Express, font options available are limited.
And when you refer to 'how do you make it show only english fonts?' Could you share the screenshot of what is being shown on your end?
Also, having an option that filters out the font as suggested by you isn't available in Adobe Express. Nevertheless, if you want others to upvote, you can submit a feature request with our product team at https://bit.ly/expressuser.