I'll take Richard because, IMO, he's the greatest clutch scorer of all-time. One of the best goal scorers who ever lived. Very strong (you never challenged the Rocket), and a strong all-round player. But he always saved his best for the playoffs - the hockey that mattered the most.
Hull and Beliveau were likely better players. Certainly won more awards. But if I'm entering a Game 7/elimination situation, and could choose from one player, ever, it would be Rocket Richard. (Eddie Shore is a close second). Shore, Bobby Hull, Beliveau and Harvey all warrant consideration for No. 5, too.
Cyclone Taylor would be a great pick. Not my choice, but a fine pick none-the-less. Likely one of the fastest skaters ever. Could skater faster backwards than anyone else could forwards, or so they say. And his instincts were incredible, the way he thought and saw the game. Likely the best player to ever lace up the blades until Howie Morenz came along. Taylor starred on both offence and defence.
Growing up in the Vancouver area, you'd hear a lot about how great Cyclone Taylor really was.