I think you are unlikely to find what you want, because the idea of the "Overton window" is not especially controversial, in the sense that it's basically a shorthand for a number of not-especially-new-or-different concepts that have been around, and are widely understood to exist, for a while. It's not really a new concept as much as it's just shorthand for "the range of acceptable opinions that reasonable people can have" on a particular issue. In fact, you could probably find/change every instance of "Overton window" to that phrase, and not lose very much, but you'd gain a bunch of extra syllables in the process. Humans love data compression.