Overhangs! That's the word I was looking for. I'm not really sure at what point a wall transitions from "a kinda tilty vertical" to "a not-too-bad overhang", but the ones I'm falling off have definitely been overhangs.

Is there a particular word for the outright horizontal bits? The gym has a few small sections of those, just below overhangs or verticals. If it follows the pattern, I suppose "horizontals" would make sense.