There is a song that was Billboard #1 for weeks back in the summer, "Rich Men North of Richmond" by Oliver Anthony Music, which supposedly is recorded with a single microphone. It's just him singing with a guitar, classic country/folk political protest song, another link in the Woody Guthrie-Bob Dylan-Bruce Springsteen chain that the critics now sometimes call Americana. He was right up there on the charts with Taylor Swift, SZA, Drake, all the auto-tune pop stars, despite not having a record label. Or even a record, he was releasing on YouTube.
It sounded as pure and simple as a recording as you will hear anywhere, could have been out of the 1950s. Well, maybe the 1970s, there is no tape hiss and it's a clean recording, good dynamic range. But my point is, you can find music that is relatively unprocessed even today, even on the Billboard Hot 100, if you look for it.
Jack White obsesses about this sort of stuff. He even rebuilt a field recording unit from the 1920s and recorded a bunch of current music stars with it. It's like 2 minutes of pure analog, pre-transister vacuum tube 1-take audio, zero processing, single microphone cut direct to disk audio goodness, and you can buy it on vinyl if you want to hear the least processed music you can get. He has a whole series of direct-to-disk LPs, mostly indie stars, that he records live in his Nashville or Detroit record stores.
So, it's out there if you dig.