I won’t spoil anything for you, but there are at least 3 other books that are not only set in the Jenkinsverse, they all took place mostly between chapters 2 and 3. Also they were written by three other authors, not Hambone
Salvage is canon up to chapter 70 something. You’ll know you left canon when Adrian Saunders starts messing around with a black hole
The Adventures of Xiu Chang. The entire story is canon
Humans Don’t Make Good Pets. While this is canon, it’s a frustrating one as it’s not finished at all, and the character has a lot of potential.
Also you neglected to mention that “Purveyor Kevin Jenkins” is a normal out of shape bartender.