Of course I know all that, but the guy in question was in fact a banker and has been operating corruptly within media and government. The similarity to the stereotype is unfortunate, but should he not be skewered by satirical cartoonists just because the stereotype exists? The stereotype is an ugly slur on the Jewish people and feeds into the worst aspects of conspiratorial thinking and basic bigotry, but that shouldn't give immunity from satirical skewering to any Jewish governmental or quasi governmental figure who is found to be sleazy and corrupt.
In my view there is nothing about the drawing of Sharp that seems offensive like a "hooked nose" or a crafty, drooling ghoul like you'd see in Nazi propaganda. I do concede that the octopus with the gold coins imagery leans too far into those tropes. But on the whole, it's a typical Rowson production, very edgy and boundary pushing, which is what a satirical political cartoon should be.
I'm sensitive to the use of harmful tropes intentional or not. Having read Rowson's statement on his website, I believe it wasn't. The octopus is troublesome though. I don't know, perhaps he crossed a line with it and betrayed some internalized prejudice.