I think considering swift as merely an evolution of obj-c is a drastic underestimation. Swift is a very nice language in its own right. Having spent time with most of the languages you've mentioned, while the learning curve might be a bit steeper, I think Swift is much easier to manage a medium or large project with than any of those options with the exception of maybe Kotlin, and personally I find some of the design choices a bit better in Swift than in Kotlin.