I am in 6 keepers...
Erik Karlsson in 4 of them. Why? He's Erik Karlsson - I acquired him in 2 via draft, and 2 via trade, all at least 2 years ago (obviously - any time in the past 2 yrs and you have to give up half your team). In one trade I gave up Brett Connoly and Hedman for EK (good deal IMO) and in another I overpaid...3 yrs ago I traded Benn + Shattenkirk for EK and a fill-in. Kind of regret that one but still got the best player.
Also have Kopitar in 3 leagues - just one of my favourite players and consistent producer.
Also have Zajac in 3 - got him cheap when he was injured in a couple.
16 Tm Dynasty,DailyH2H
10 Tm-8F,4D,2G Weekly