I don't think there are any more beyond those you listed.
There would be three reasons to perform a docking:
- Demonstrate capability
- Bringing something back
- Assembling a larger structure
As no assembly as taken place beyond Earth orbit so far, 3) is ruled out.
2) I relatively simple to cover, since the only things worth the high cost of recovery is humans and surface samples. Humans have only travelled beyond Earth orbit during the Apollo programme, and surface samples have only been taken from low gravity environments (solar wind, asteroids), and the Moon. Other than Chang'e 5 and Apollo, the only other lunar sample returns were in the Soviet Luna programme, which did not use docking.
1) Is more tricky. Automated docking (in Earth orbit) was demonstrated as early as 1967 by Kosmos 186 and 188, so there's half a century of probe history cover. Nevertheless, going through list of space probes after that date, I can not find any examples (which would have been a major mission goal). There are also several news sources covering Chang'e 5 as "first automated docking in Lunar orbit".
On the more silly side, is Venera 14 popping off its lens cap and then analysing it with its compressibility tester arm a "docking"? :)