Maybe Rockefellers. Rockefeller and Rothschilds merged some of their assets in 2012.
dealbook.nytimes. com/2012/05/30/rockefeller-and-rothschild-banking-dynasties-join-forces/
Soros is a poor cousin compared to Roths and Saudi Arabia and House of Windsor. (BTW according to David Icke, Windsors control is at least partly through Club of the Isles. Details here: transmissionsmedia. com/the-windsor-familys-wealth/)
GS reputed wealth $8B. forbes.com/profile/george-soros/
Soros' influence is due to connections and enthusiasm for activism in promoting New World Order.
"[Soros] real power stems from his membership in the elite organizations promoting a “new world order” (i.e., world government), such as the CFR, Trilateral Commission, Bilderberg Group, and International Crisis Group.
It is CFR globalists who always shield the Soros types from the death rays of genuine public scrutiny: “Pay no attention to that man behind the curtain”; “These are not the droids you’re looking for.” Wielding their power in the media, as well as their influence in political, business, and financial spheres, the CFR elites killed the congressional investigations in the 1950s that were threatening to expose the funding of socialist and communist subversion by the big tax-exempt foundations. They will run out the same playbook once more when (and if) official efforts are again launched to expose the schemes of Soros, Democracy Alliance, and other new world order mega-donors. If they succeed in quashing these efforts, it is unlikely we will ever get another chance. That is why it is absolutely necessary for citizens to press their senators and representatives to investigate — and, where appropriate, for state attorneys general to prosecute — funders of chaos and bring them to justice."
thenewamerican. com/usnews/politics/item/25200-democracy-alliance-soros-billionaires-club-for-revolution
For those wanting to dig further, above article identifies other anti US power brokers-both individuals and orgs.