Clojure's Java interop is smoother than Scala's, but not as seamless as Kotlin's. Kotlin is modern syntax for the same Java APIs and programming philosophy. Scala and Clojure are radically different languages (from Java as well as each other), for better or worse.

Kotlin is a modern Java-replacement, while Clojure and Scala have different strengths and weaknesses. That's not to say that you can't write many applications in any of the four languages, but the "feel" of the codebase would be completely different in Clojure or in Scala, while Kotlin would feel the same (but would be leaner).