Unfortunately not, since those apps are all business internal.
On Android/react-native, the Kotlin parts runs on the JVM directly. I haven't released a KotlinJS-application to the wild yet, but I don't suppose the size is a problem after running it through webpack, uglify et. al.
You are right, the runtime is rather larger though. Do you have suggestions?
How do you deal with the massive size of the javascript that is generated by kotlinJS?