Everything you said in your first point is amazingly helpful, thank you so much. I was just messaging another person here in GC and that helped me to see that I'm likely looking for both explicitly interdisciplinary programs and innovative/interdisciplinary English programs, depending upon faculty and other factors (though probably primarily the explicitly interdisciplinary programs). I'm very much a theory-loving person, am interested in the ways conceptual frameworks across a variety of contexts and archives, and how schools of thought have influenced one another--all of that. I had yet to learn about programs like Stanford MTL and the other schools you've mentioned, so I'll definitely be looking into those. I only just learned of Carnegie Mellon's Literary and Cultural Studies program, and so far it's a very appealing program in my eyes. And that's very helpful to know, in regards to your mention of interdisciplinary programs' rankings.
So, now that I've got a better radar for schools/programs, I guess I can begin to ask folks here: what English PhDs out there would you say are closer on the spectrum to programs like Standford's MTL? I've yet to more thoroughly know what lists of schools typically get circulated as being quite innovative/interdisciplinary, and I want to make sure I'm looking in all the relevant places, regardless of program type, for what I'm looking for. One school that had been suggested to me by a mentor is CUNY Grad Center, and so they've certainly seemed appealing (last I looked around their website). Still, I do get the sense that the explicitly interdisciplinary programs are going to be more of interest to me, so I guess we'll see how this initial school-list-compiling step goes.