Interesting, great effort putting this together. However, your data is flawed and not directly comparable because the PP ice-time is much more evenly split in Montreal between the two waves than the other teams mentioned. We have to take this into consideration. KK averages 1:58 of PP ice-time per game, while Nick Suzuki averages only 2:25 (27 seconds more). KK produced 4 points on the PP (all assists), while Suzuki has 13 points (5 goals, 8 assists).
If we look at most examples of "2nd wave" players with low point totals around the league, there's a much bigger discrepancy in PP ice-time in relation to their 1st wave players. For example, in Buffalo, Skinner averages 1:17, Eichel 3:27 (2:10 difference). In Florida, Wennberg averages 1:50, Huberteau 4:15 (2:25 difference). In New Jersey, Severson averages 1:54, Hughes 3:07 (1:13 difference) etc.
Using data from the NYI would be a better comparable taking into account how their PP ice-time is split between their two waves. Bailey averages 2:05 and leads their team with 9 points on the PP, while Barzal averages the most at 2:36 and has 7 points. Walhstrom with 1:48, Pageau with 1:52 and Nelson with 2:11, all have 8 points each. PP production is much more evenly spread between their players in relation to how their ice-time is split.