Henrik Sedin 60/40 split: 40 first assists, 27 second assists.
Claude Giroux 59/41 split: 38 first assists, 27 second assists
Erik Karlsson 54/46 split: 32 first assists, 27 second assists
Joe Thornton 50/50 split: 30 first assists, 29 second assists
Joe Thornton is probably the only interesting case as we'd expect him to be first-assist heavy. San Jose's Joe Pavelski (74:26) and Logan Couture (78:22) were both incredibly first-assist heavy last year. That bodes well (IMO) for their futures. Jumbo Joe & Dan Boyle racked up several second assists - possibly on the PP... not sure.
San Jose would be an interesting team to look at first & second assist distribution. I think Frozen Pools can do this (but I don't have a subscription).