For me it's most of the post-Nemesis litverse continuity, plus a lot of the Rihannsu series (I absolutely refuse to accept Ael t'Rllaillieu not being canon.)
As far as I'm concerned, Nemesis itself happened, but with details about Romulus/Remus brought in line with the latter series. The "Remans" we see in the movie are actually bioengineered Romulans or some such (probably to figure out how to regain latent Vulcanoid telepathic abilities--like they tried to do in My Enemy, My Ally--among other things). Remus (ch'Havran) used to be Class-M like Romulus (ch'Rihan), but an ecological disaster turned it into the hell Shinzon experienced.
Also, a considerable portion of New Frontier is canon. Certainly all of the characters exist, especially Calhoun. (Although I like the United Trek's take on Shelby more than New Frontier's version.)
As for what's not in my continuity--The Final Frontier, TMP, TAS, Kelvinverse (Spock is dead and the Romulan homeworld is gone, but there was no time travel involved), and the events of Discovery after the Battle of the Binary Stars (the DSC novels that have been published so far ARE, however, canon to me.) NOTE: The DSC characters exist (especially Georgiou, Lorca, and Saru) but in a world quite different than that of the show.
As far as I'm concerned, Nemesis itself happened, but with details about Romulus/Remus brought in line with the latter series. The "Remans" we see in the movie are actually bioengineered Romulans or some such (probably to figure out how to regain latent Vulcanoid telepathic abilities--like they tried to do in My Enemy, My Ally--among other things). Remus (ch'Havran) used to be Class-M like Romulus (ch'Rihan), but an ecological disaster turned it into the hell Shinzon experienced.
Also, a considerable portion of New Frontier is canon. Certainly all of the characters exist, especially Calhoun. (Although I like the United Trek's take on Shelby more than New Frontier's version.)
As for what's not in my continuity--The Final Frontier, TMP, TAS, Kelvinverse (Spock is dead and the Romulan homeworld is gone, but there was no time travel involved), and the events of Discovery after the Battle of the Binary Stars (the DSC novels that have been published so far ARE, however, canon to me.) NOTE: The DSC characters exist (especially Georgiou, Lorca, and Saru) but in a world quite different than that of the show.