def get_system_columns(columns):
    """Filters leaderboard columns to get the system column names.

    Args:
        columns(iterable): Iterable of leaderboard column names.

    Returns:
        list: A list of channel system names.
    """
    excluded_prefices = ['channel_', 'parameter_', 'property_']
    return [col for col in columns if not any([col.startswith(prefix) for
                                               prefix in excluded_prefices])]