def get_top_rated_actors(top_rated, top_casts):
    """
    Gets all actors with the most movie credits from the top rated list.
    :param top_rated: dictionary of top rated movies
    :param top_casts: dictionary of top rated casts
    :return: sorted list of actors with number of roles they stared in for a top rated movie
    """
    top_actors = {}
    for rated in top_rated:
        actors = top_casts[rated]
        for actor_index in range(1, 5):
            if actors[actor_index] in top_actors:
                top_actors[actors[actor_index]] += 1
            else:
                top_actors.update({actors[actor_index]: 1})
    top = sorted(top_actors.items(), key=lambda x: x[1], reverse=True)
    return top