For my own curiosity, ran with Bingo's method but only included the rankings done after May 1.
Bob McKenzie - May 6
https://www.tsn.ca/nhl/bob-mckenzie-...rini-1.2116004
Craig Button - May 7
https://www.eliteprospects.com/draft...n-craig-button
Steven Ellis - May 28
https://www.dailyfaceoff.com/news/20...ionship-top-80
Scott Wheeler - June 3
https://www.nytimes.com/athletic/552...100-prospects/
Flo Hockey - June 3
https://www.flohockey.tv/rankings/12...mes-in-at-no-2
1.0 Celebrini
2.2 Demidov
3.8 Levshunov
6.0 Parekh
6.0 Buium
6.6 Dickinson
8.2 Lindstrom
8.8 Silayev
8.8 Helenius
9.0 Catton
10.0 Iginla
10.6 Eiserman
11.8 Yakemchuk
13.4 Sennecke
....then it gets messy