The 6th trader worth studying is, as two or three mentioned, oneself. Making 10, 20, 30 million dollars is absolutely possible for everyone here, through trading. If you have a great life, does it matter if you are a billionaire or not?
Trading is an occupation one can carry on until they moment they expire. It can be done from anywhere in the world, at any time. One can spend 12 hours a day trading, or 2 and get phenomenal results.
What does George Soros have to do with a beginning trader learning the discipline of honoring his/her stops? Maybe that they should have them, but everyone thinks they know that. The ones who truly know are the ones doing it. To know and not to do is not to know.
Reading a bio of those 5 top traders may entertain the emotions and inspire the idea of possibility for many traders. But those bios have nothing to do with acquiring the skill it takes to be a trader, a professional, career money making trader. That can only be done by studying oneself, and figuring out for oneself how to acquire the skills it takes to make money as a professional.
Many top professionals in any field cannot explain how they do things, and are very difficult to learn from. Such highly developed skill can only be explained by performing the skill, there are no words to describe all of the actions it takes to perform at this high level.
So its up to each individual to choose greatness him/herself, and look to themselves for how to become better.
In short, if you are going to look up to any trader, look up to yourself. The best trader you really know is you anyway.