For me it's easily Isaiah. He really was something else on the offensive end.
That Boston team was scrappy and tough defensively, but they wouldn't have come far without Isaiah.
Isaiah Thomas was a top 5 NBA player offensively at his peak.
I don't think Tatum currently is even close to the top 10 offensively. Probably more 20-30, but Tatum is 20-30 on defense as well and that combination makes him a top 15-20 player.