Traditionally, these browsers aren't classified as "privacy browsers." While they can be hardened to some degree (Safari in particular), it's generally recommended to migrate from these browsers when possible to do so.
Since TOR is configured to run on the onion network, that makes it a completely different animal from the browsers shown here. This isn't necessarily an overly "good" or "bad" thing - just that TOR is different enough not to be included here.
TOR has many unique characteristics about it, especially the technology behind the .onion network and its relay hops. It was decided not to include it on this table since it's so unique.
While this privacy browser comparison table aims to be an accurate and up-to-date tool, information can become easily outdated. Also, information may have been missed - after all, I wouldn't ever call this table "complete" given the evolving nature of web browsers.
Anyone is welcome to suggest an edit to this table. Comment below with your suggestion + relevant/credible link and let's have a look before adding it.