So Guillaume Latendresse just completed his 20yo season, posting 1.07 ESG/60 and 1.75 ESP/60 in 788 ES minutes. Judging from seasons by other players in the post (which, it must be noted, is restricted to players who landed between 20th and 60th percentiles), his goal rank would be at least 80th percentile and his points would be close to 60th (these are guesses because MC79's post on percentile rankings doesn't include 07-08).
Lats would be near the top of the 20yo list in the post, alongside Devereaux, Fisher, Morrow, Perry and Antropov. He's well above a lot of impressive names, like Hartnell, Erat, Roy, Sedins and M. Richards.
It will be interesting to see if Latendresse finishes next season over the magical 60th percentile marker as a 21yo. Looking at his season in this light makes me want to reconsider the Pyatt Plus label I stuck on him below. Maybe we should upgrade him to Antropov-ish.
Addendum: In Andrei Kostitsyn's 21yo season (06-07) he posted about 2.3 ESP/60, albeit in limited icetime. He would have close to 85th percentile. AKost looks like a player.