What jewish establishment was promoting/supporting them?

Academia, media, politics and finance. Pretty much all of it. Ignatiev was admitted into a post graduate Harvard program despite being a college drop out. The most prestigious school in America, and he gets in with zero credentials because he was a fanatically anti white Jew. He was continually promoted by mainstream media and lauded when he died. His anti white screeds were published with zero controversy and sold everywhere. Wise is also continually quoted as an "expert" on "hate" and racism by mainstream media sources and given plum speaking seminars, again with zero pushback.

I don't even think the majority of jews(at least from what i've seen)even know who those guys even are.

Yeah, because most ordinary Jews are just dumbshit brainwashed NPCs. They will get wound up and circle the wagons when their elite want them to, but are probably largely oblivious to the bigger picture, just like goy NPCs. They enjoy Jewish privilege without being conscious to it, and in fact being convinced that they are some persecuted minority and history's greatest victims, but many(and possibly even most)aren't explicitly anti white. However there is a mafia like group of elites that are, and these are generally the most powerful and well connected Jews(and hence people) on planet earth. These are the ones who promoted the likes of Ignatiev and Wise.

Jews have no power over me since they don't control any of those things you've listed.

They control all of it. Who cares who the figure heads are. The ones with power are the ones who decide who runs and who gets elected, and if they want them gone, they will be gone. Just ask Jeremy Corbyn who has the real power.