If for arguments sake you leave out the Highams and Hudsons and only count those who have 1. actually played in a Bulls shirt and 2. are now playing for another pro league team then my (probably not comprehensive) list of candidates is:

Forwards: Adrian Morley, Chris Feather, Jamie Peacock, Matt James, Richard Moore, Stuart Fielden, Brad Meyers, Sam Burgess, David Solomona, Glenn Morrison, Brett Ferres, Larne Patrick, Lee Radford, Lee Gilmour, Matt Cook, Paul Johnson, Rob Parker, Simon Finnegan
Hookers: Ian Henderson
Halves: Ben Jeffries, Leon Pryce, Paul Deacon
Backs: Chris Bridge, James Evans, Ryan Atkins, Ben Harris, Tame Tupou, Karl Pryce

From the above then I'd have to say currently doing best are Burgess and Atkins

In terms of coaching staff I forgot Paul Anderson, and Ivan Henjak

World class coaches/players currently working/playing at the top:
Brian Smith
Brian Noble
Saints coach
JP
Sam Burgess
Leon Pryce
Paul Deacon

There are numerous others, named earlier, who are no longer at their peak or still to reach it.
Bridge & Atkins demonstrate the weakness in our 3/4s, both decent palyers who would not get a look in in the NRL.

Players that I can think of that played for our first team and are still playing in the lower leagues:

Stanley Gene
Robbie Paul
Toa Kohe-Love
Marcus St Hilaire
Richie Hawkyard

There are a few playing out and about too that were in our academy but never played in the first team:


Mark Flanagan
Keal Carlile
Eddie Kilroy
Dominic Brambani
Tony Tonks
Jode Sheriffe
Alex Szostak
Matty Brooks
Jason Boults
Luke Helliwell


(Purely for the candidates list, not suggesting all of those are doing well)

What about Ivan Henjak for our next coach, with Menzies as assistant, then?