Least Hacky Loop

BestLoop.java

List<Item> allBucket = ...
List<Item> genderBucket = ...
List<Item> sizeBucket = ...
List<Item> colorBucket = ...

List<Item> recommendations = new ArrayList<>();
picker(recommendations, limit, colorBucket, sizeBucket, genderBucket, allBucket);

private <T> int picker(List<T> src, List<T> dst, int limit) {
  Iterator<T> iterator = src.iterator();
  while (iterator.hasNext() && limit > 0) {
    dst.add(iterator.next());
    limit--;
  }
  return limit;
}

private <T> void picker(List<T> dst, int limit, List<T>... sources) {
  for (List<T> src : sources) {
    while (picker(src, dst, limit) > 0);
  }
}