The best sauce for all of this is recorded in "The International Jew" by Henry Ford, Sr. I have it only in the dead-tree editions.
Baruch also surfaces as part of the Jewish group called "The Focus" that funded Churchill (a war criminal). Remember, Churchill was the First Lord of the Admiralty in WW1 and he committed the war crime of continuing the naval blockade of Germany AFTER their surrender. This was called the Hunger Blockade. You might find some sauce for this online. An unknown number of German civilians starved to death.
Paul Warburg's brother, Max, was the head of the Reichsbank and provided a funding conduit for both Hitler and Lenin.
Morgenthau created "The Morgenthau Plan" - later renamed that saw the extermination of about 2M German POWs after WW2 at the hands of the US Army and under the direction of Eisenhower.
Brandeis, Baruch and Frankfurter are all tied to the New York Kehilla - the Jewish mafia. It was out of the NYC Kehilla that Leon Braunstein (Trotsky) got $100K in cash and took to Russia for the Bolsheviks.
Paul Warburg was at Jekyll Island.
I have less info on Jacob Schiff.
Bernard Baruch was a GOD over all US war material production during WW1 and he funneled taxpayer money into the major Jewish firms supplying things like copper.
To give you all sauce for this, I'd need to cut the books apart and scan them. See what you can find online to provide links.
Other Sauce:
David Irving wrote a biography of Churchill where Baruch shows up.
David Irving also wrote a book on the Morgenthau Plan.
I've seen YT videos on the Morgenthau Plan.
The Churchill biography is being heavily suppressed, but David has some videos on YT about it.
Again, sorry for the lack of links to help with sauce. Many things are not on the web and only in the old books.