That is more about sponsorship disclosures. A better parallel would be with disclosure of paid or sponsored material on broadcasts.

But yes, I’d be all for that. If a bill is drafted, all the entities that had input into that draft should be listed. If a politician gives a speech at the request of a compensating entity, that should be disclosed at the beginning: “This speech was paid for in part by Audible. More on them at the end of the speech”