Now if your concern is faster loading then I suggest you go for Preact, it is very light. Google has Flutter coming later this year (at least beta version). I feel it’s going to be a game changer. Still for now Preact seems to be the best bet, because it is similar to react and ecosystem too is like React too.
However if you haven’t heard about Vue.js then I suggest you give it a spin, it is really and up and coming JS. It is very simple, the only problem with this is the lack of support meaning you have to script with little or no help.
Read the blog link to find out more.