Nice one Daniel!
I can say about myself that I’m too in the process of transitioning to React.
I found out React to have one major setback, especially where your app supposed to be lightweight (like a widget).. The React and ReactDOM libraries really buff your project total weight. Even after optimizations, the best result I got to in terms of file size is 230KB.
Then I investigated a little more and found out a few articles about it:
Reduce React App Size in Production
https://medium.com/@rajaraodv/two-quick-ways-to-reduce-react-apps-size-in-production-82226605771a
React Replacements:
React Lite
https://github.com/Lucifier129/react-lite
Preact
https://github.com/developit/preact
Inferno
https://github.com/infernojs/inferno
Bonus (Adding to your list):
List of React UI Frameworks
https://hackernoon.com/the-coolest-react-ui-frameworks-for-your-new-react-app-ad699fffd651
Long list of components for react
https://github.com/brillout/awesome-react-component