I found one with 813 paths with 4 degrees, but yours has 1,645 paths with 5 degrees. I suppose there are end points with many thousands of links. It's a bit of trivia, not really a measure of anything.
It's a bit surprising, since you'd think that with 1,645 paths with 5 degrees, there'd be at least one path with 4 degrees, but it doesn't work that way.
This isn't really the best measure though, because it only counts # of paths at the minimum depth level.
edit: although I found some deep searches with very few links: https://www.sixdegreesofwikipedia.com/?source=Frank%E2%80%93...