Swift is #6 on that list, TypeScript is #4. Swift is a completely new language which has a big overhead to learn from start to finish, but JavaScript has a lot of momentum and existing developers since it is already the lingua franca of the front end of the web. Swift is evolving slowly, but JavaScript is making very quick progress through TC39 during the same time span that Swift was alive. Swift has ambiguous and biased leadership but JavaScript has a well defined and established committee with members from major competitors who have common interest in the language succeeding. TypeScript inherits a lot of these benefits, as it intends to always keep up with the latest JavaScript standards and specification.