Awesome post, never really thought that much about Wilt's vertical. From what I've read in this article https://ballamazingly.com/the-highest-vertical-jump-ever-reached/ ↗ Kenny Gregory holds the highest officially recorded vertical jump (from the NBA Combine) at 45.5". I think you should have included Kenny Gregory's 45.5" vertical jump since I think that he was technically an outlier to the 45" vertical jump average.
Also, I'm unsure as to whether or not Kenny Gregory has a higher vertical than Wilt, so I'm assuming Wilt's vertical has to be at least 46".