I think the obvious answer to this questions would be one of the Lavoie siblings as they dominate the league in Points/Goals/Assists and are a big reason why Maine is playing such a fantastic season.
That said, if you lock at their team overall you will notice that they are well rounded all over the place and currently clinch the Top 9 +/- spots while having multiple players in every other category as well. Not wanting to undersell the Lavoie's efforts, we might want to look at players who carry their team on their back, rather than being part of  a well-oiled machinery, which leads me to Jason Warwaha, who is far and away the only Berseker player to appear (quite high too) on the leaderboards of the more important categories.
A shoutout should be made to Anastasia Soderstrom, the Detroit goaltender who has an insane amount of Goals Saved Above Average and boasts the highest SV% in the league.