The ICANN root zone only contains gTLDs and ccTLDs which are delegated. Other TLDs which are explicitly reserved for non-public use, like .localhost, .test, or .invalid, don't appear on that list either.
Though that list apparently includes all reserved names, not only those reserved for non-public use.
[1]: https://newgtlds.icann.org/en/applicants/agb
[2]: https://newgtlds.icann.org/sites/default/files/guidebook-ful...