I will personally guarantee he jumps higher than Draymond right now. Even though he's got 40 pounds on Green he jumps higher no question, that's impressive.
Greens no step vertical is 28" and his max vertical was 33".
Smart jumped 33" standing vertical, he jumped 36" max vertical. and my max vertical was 33" back in my phisical prime.
Which is to say I could jump, but not that high. Guaranteed Yabu jumps a lot higher than me or Draymond ever could.
There is one measurement of 27.5" vertical, but that is likely garbage, it's his standing vertical if anything. His max vertical is around 35 to 36".
That's a big reason Ainge shocked everyone at #16. That and his shooting is excellent, good ball handler and rebounder.