import re


def get_alt_names(name):
    """
    Return list of alternative names for an object.

    :param name: Original name/ID (string)
    :return: List
    """
    name = name.lower()  # Convert all versions lowercase for indexed search
    return [name.replace('_', '-'), re.sub(r'[^a-zA-Z0-9]', '', name), name]