Seems like the Disney Canon timeline for Star Wars would make the most sense with the dark side endings for KOTOR 1+2
(spoilers for KOTOR 1+2)
- the fact that they almost put Revan's ghost as a dark side influencer in Clone Wars (technically that was before the Disney reset but whatever. Also I think they did some bullshit with Revan in SWTOR that I don't know about?)
- the planet "Malachor" in Rebels is probably meant to be Malachor V, tho it could be a different planet in the system. If it is V, then the fact that it's not destroyed implies the dark side ending of KOTOR 2