From his talk on OOPSLA[1], I'd say that only Smalltalk and Common Lisp (through CLOS) were able to perform OO as Kay envisioned.
Erlang is another story: it would probably be better to call it just actor model. But again, Kay himself says[2] that there is not a lot of difference between actor model and his OOP.
Erlang is another story: it would probably be better to call it just actor model. But again, Kay himself says[2] that there is not a lot of difference between actor model and his OOP.
[1] https://www.youtube.com/watch?v=oKg1hTOQXoY
[2] https://www.quora.com/What-is-the-difference-between-Alan-Ka...