In terms of consistency, you would have to go with Lyon on the right and Jennings on the left. Very different players - Jennings relies on sheer speed and footwork, while Lyon relies on footy nous and ball skills - but equally effective.
Ferguson and Hodges (both right centres) are devastating, but the former when he has his head screwed on, and the latter when his body isn't falling to pieces.
Players like Josh Morris, Steve Matai, Brent Tate, Shaun Kenny-Dowall are a rung below those top four players. All of them have strong aspects to their game and on their day are definitely representative standard players, but aren't as consistently devastating as the top tier. Would have had Chris Lawrence and Jamal Idris in there too, but they have fallen off a fair bit.
There is plenty of new talent in the up-and-coming generation, though! Tim Simona, Konrad Hurrell, Dylan Walker, Justin O'Neill, Jarrod Croker, Tim Lafai, Dane Gagai, Joseph Leilua, Dean Whare, Kane Linnett, Jacok Loko, Ryan Morgan
