I taught myself music theory mostly by playing with chord progressions and writing music based on what I like. (I've since learned music theory proper.) As a result, I prefer to use some chord progressions that I somewhat rarely see elsewhere over most typical chord progressions.
For example, when a music theory resource introduces chord progressions, the biggest idea that it uses is that chords are usually made up of notes in a scale. So, for instance, the most common chords for C Major are CMaj, dmin, emin, FMaj, GMaj, amin, and bdim.
In contrast, the chords I use the most don't follow that pattern. In major keys, I use almost exclusively IMaj, bIIMaj, bIIIMaj, IVMaj, bVIMaj, and bVIIMaj. I use the same chords for minor key songs, except I switch out IMaj with imin.
Neither of these sets of chords come from their keys, and they don't match any modes, either. My question is, is there any name or common way to describe the chord progressions I prefer to use? Or do I like some pretty unusual chords?
I know that some of these chords appear in common chord progressions. bVI-bVII-I, I-bIII-IV, and I-bII-bVII are three progressions that show up in pop, rock, and EDM and that I use frequently myself.