Need opinion on license type

Hello,

Need an opinion on what license type should be choosed for:
LICENSE
---
Copyright 1991, 1992, 1994, 1998, 1999, 2002   William D. Norcott
License to freely use and distribute this software is hereby granted
by the author, subject to the condition that this copyright notice
remains intact.  The author retains the exclusive right to publish
derivative works based on this work, including, but not limited to,
revised versions of this work

Other contributors:
Don Capps       (Network Appliance)        capps@iozone.org
---
https://www.iozone.org/

IMO at first sight it seems NONE since it don't match Predefined License
List
<https://docs.freebsd.org/en/books/porters-handbook/book/#licenses-license-list>
,

Thanks in advance,

Nuno Teixeira