If we're limiting ourselves only to new languages, then nulls are statically excluded not only by Kotlin and Apple’s imitation of it, Swift, but also by F#, Agda, Idris, Elm, and (sort of) Scala. But the zozbot didn't seem to be talking only about new languages, so Haskell, Miranda, Clean, ML, SML, Caml, Caml-Light, and OCaml are also fair game. (It wouldn't be hard to list another dozen in that vein.) Moreover I think you could sort of make a case for languages like Prolog and Aardappel where you don't have a static type system at all, much less one that could potentially rule out nils, but in which the consequences of an unexpected nil can be much less severe than in traditional imperative and functional languages like Java, Lua, Python, Clojure, Smalltalk, or Erlang, which more or less need to crash or viralize the nil in those cases.