I've found Materia-UI to have the best code quality, most up-to-date. If you don't like Material UI theming it's also easily overridable.
Downside of ant-design is that the library is huge (there was a bug recently where the whole icon library was included in the bundle!), some of the components have bugs, style/look is not easily modifiable.
Love ant-design and currently, you can use tree shaking I believe. It is otherwise a heavy lib for sure. Not great for B2C apps, but for B2B with caching it should be okay if users have decent broadband speeds.