Let's revisit this in 2020. I have a strange feeling that React will still be heavily used (though maybe encroached by some future framework, you are correct about the changing landscape!) with Angular still trying to follow the leader.
If Angular is trying to follow React (which I'm supposing is "the leader"), it is doing a very crap job of it. I'd say Mithril is following React, but I wouldn't say that about Angular.
