Absolute defenseman and goalie factory, hey? The Hockey News issue seventieslord contributed to has Weber, Suter, Timonen, Josi, Hamhuis and Ekholm at 1,3,4,7,9,15 respectively - since then, Josi has to be top 5 and Ekholm has surely risen, not to mention PK Subban's 3-season stay which didn't even rate a mention as of October 2017. And then they have Rinne and Vokoun at 2 and 6.
Legwand has played over 3 times as many games as their first legitimate offensive threat (Ronning), 3 times as many as the first real ringer to give them some punch as a playoff team (Sullivan), almost 6 times as their next big ringer (Kariya) and twice as many as current top weapon Filip Forsberg. Forsberg will likely need 4 more healthy seasons (and he hasn't exactly been consistently healthy, and the entire world is not healthy right now) to pass Legwand. Josi could pass him in 2 and a half seasons if he keeps up his current rate - it'd be quite something to see a 20+ year old franchise with a defenseman leading them in career scoring.