I find it funny how we use phrases like "Russian oligarchs" all the time without batting an eye, but we never use them when referring to the Bushes or the Clintons in the US.
Steve Jobs, Bill Gates, Sergey Brin, Mark Zuckerburg are better examples of oligarchs because they managed to create their own wealth and with that obtained political clout.
Haha, there's that fiction. See how deeply it pervades all thinking about power and success in the US?