Is there an open-sourced Medium-themed blog?

I really like Medium, its font, typography, and simplicity, all really appeals to me. I'm trying to start a blog for myself and am wondering if there are any ready-to-use "Production quality" (and already used by. lot of people) blog software (react, gatsby, hexo) etc that would give me something out-of-the-box? any help appreciated. I know how to run it on firebase or netlify,