What about Peter Pollock, Mike Proctor, Vince van der Bijl, Garth le Roux, Clive Rice, Neil Adcock, Peter Heine, etc. ???
Not enough sustained brilliance at the top due to circumstances. Even Shane Bond was around long enough to make an indisputable statement. Mike Proctor? Fair enough. You add him onto the list, I wouldn't argue. Decent player's opinion of Adcock mean he's a fair inclusion. I don't know much about the rest. (Sadly you'll know that it's taboo to pay respects to some of these players due to insensitivities about the past so some of will never know much about a lot them. Generally anyting pre-1992 gets no recognition. Maybe then you understand their exclusion intially?)
Guys nowadays wouldn't survive so many long spells at the same high speeds against these former bowlers, but I can still see a Dilshan, AB&Gayle getting hold of them long enough to leave lasting damage. They too would've been corrupted and turned into inferior bowlers by the swift changes from Test to ODI to T20 then back. Steyn is a perfect example of how much harm these formats can be to a brilliant bowler.
There's only a handful of modern players who we can say could've been great in all generations. For me Wasim Akram, Jimmy Anderson, Glenn McGrath aong the bowlers - due to their natural skill and ability to make batsmen look utterly stupid ball after ball. Among the batsmen Sanga, Ponting and Mohammad Yousuf. Kohli looks to have the alround attributes - combines the best of all those three batsmen respectively - efficiency, aggression&pure class but like a Philander, he either hasn't had a career long enough yet or might not. Amla&Sachin lack the necessary aggresion to have survived against some of those brutal fast bowers, while one can't include Mahela if Lara isn't there. Most of the others would've been reduced to a Geoff Boycott. Nothing earth-shattering. A lot of the spinners are like the Tour de France greats - tainted. So you can't really say anyone beyond Shane Warne, while I feel Kumble would've been an even greater spinner if he played in those times.