In the chorus of one of the last songs, "Goodbye", off of Bo Burnham's special Inside, Bo uses the following progression:
Key Signature: G Major Chord Progression: C - B♭ - G
I believe that this B♭ is a borrowed chord -- the ♭III of G, making the progression IV - ♭III - I. (Notably, the chord following the IV is F, so the full progression may be described as VII - IV - ♭III - I, which I've also found is a relatively common use of the ♭III.)
What's sticking in my head is that this particular progression seems incredibly familiar. In particular some itch in my head keeps pointing to 90's grunge music for some reason, though I can't put my finger on it.
I've done a bunch of reading on the ♭III and have found only a few examples from rock music in analyses and instructional videos on the use of the ♭III, most notably (to me at least) the intro bass line from Spirit in the Sky by Norman Greenbaum. It definitely has that similar feel of Bo's progression (to me at least), even in just the baseline.
One other note that I've made is that the ♭III is potentially borrowed from the Mixolydian mode, which is very common in rock music. It's possible that one of the progressions that I'm thinking of is a more 'mundane' Mixolydian progression that this progression is more "alluding" to.
First, am I off base on my interpretation of this chord progression? Second, are there any uses of it in rock music, particularly grunge music, that I can point to?