The class AnimatedBuilder should have its name replaced. As it is not related to animation in reality.

For example, the following is possible :

final valueNotifier = ValueNotifier(0);

AnimatedBuilder(
  animation: valueNotifier,
  builder: (context, _) {
    return Text(valueNotifier.value.toString());
  },
)

Same goes for ScrollController, ...

I suggest to rename it to ListenableBuilder as it makes more sense.