No player has ever medalled in every tournament. Apart from Hughes last year, three players from mid-table hockey countries have participated all three tournaments: Kevin Fiala, Vadim Karaga and Andrei Kostitsyn.
Edit:
On another triple tournament participant, Kenny Jönsson is the only player who has medalled in WJC, OG and WC in the same year. Eight players have participated all three in same year, although Malkin is the only one who did so when NHL players participated in the Olympics (2006)