Regarding kashrus organizations, we do have the equivalent of an umbrella organization.
Basically, all the hashgachos rely on each other to use the components made by the others, in their stuff. There is a large “club” of hashgachos who rely on each other, and by using one, you are implicitly using the rest since you are probably eating their ingredients.
Any hashgachos which are not up to snuff are marginalized by the “club”, and then we know not to use them.
Thus, the big ones I’m aware of now which are not recommended by the “club” ones, and not used by the many of us, are the “triangle K” and the KVH (vaad of Massachusetts).
This de-facto centralization is quite effective and good for the kosher consumer.
Many organizations will not tell you who is in the club, but the CRC of chicago will.
I also will, by calling the CRC.