What is RJ Barrett's Role with the New Look Knicks? | New York Knicks

With the additions of Kemba Walker and Evan Fournier, the New York Knicks have much more firepower. Julius Randle's role is fully established, but what about RJ Barrett? We know RJ will have a big role, but what is it? A spot-up shooter? Slasher? Second, third, or fourth option?