Tom Paul,
I've read several places where Raynor is considered an apprentice of Macdonald. I haven't really read anywhere that asserts that Bell was Thomas' apprentice, but for the purposes of my next point, I'll consider him the closest thing.
In my opinion, there are two ways to study the innovation of Thomas vs. the traditionalism of Macdonald.
1) What Michael Robin calls George C. Thomas' Eden hole, the 6th at Riviera. The innovation of pushing the strath into the middle of the green, whilst keeping intact the slope of the original, is as creative a take on the hole as you can find. In his usual reverence, Macdonald's Edens are much more traditional.
2) The "apprentices" of each of the men. Juxtaposing the careers of Raynor and Bell might as well be a juxtaposition of Macdonald and Thomas themselves.
I am looking forward to learning more about the men and their architecture. Thanks for the inputs.
Ben