React should be the first one to start your Javascript framework journey. There are many reasons to suggest react but I will share only a few.
1). Reactjs is a library which is totally based on core javascript concepts. So if you like working on javascript, I bet you will love to learn and work in react.
2). Because it uses core javascript concepts, it is very easier to understand and it is very fast in processing your application.
3). It has a vast variety of animation library and designing UI frameworks like react-bootstrap, material-ui, etc.
You will learn more when you start.
Thanks