Apples work well on white pizza as well. Perhaps OP only tried with red sauce, which I imagine wouldn’t be very good.
But indeed there’s a local pizza place around where I live that does a simple olive oil base topped with creamy cheese, tart apples, arugula, and drizzled with balsamic glaze. It’s utterly fantastic
It’s funny if you watch them for a minute too, their burning cross catches its surroundings on fire, burning many of them to death.