Not exactly. While the game takes inspiration from the comics, there are significant differences and storylines that are unique to the game.
The Walking dead comics are indeed canon. They provide the original and authoritative narrative. However, adaptations like the TV show might make some changes, but the comics are the primary source of the storyline.
Yes, the Walking dead comics are considered canon. They form the basis of the entire storyline and universe.
Yes, it is. The game takes inspiration and elements from the comics to create its storyline and characters.
No, Lilly is not a character in the comics of The Walking Dead.
Yes, they are. The novels expand and complement the universe of The Walking Dead, and are accepted as part of the overall canon.
The Walking dead novels are mostly regarded as canon. They contribute to the broader narrative and enrich the world-building. But like with many franchises, there can be differences in how different people view their canonicity.
No, Lily isn't in the comics. The game and the comics have different character sets and storylines.
As of the latest comic issues, Daryl is alive. The storylines have managed to keep him in the thick of the action without killing him off.
No, Judith isn't dead in the comics as of the latest issues I know.
Michonne does die in the comics. The circumstances surrounding her death were quite dramatic and had a significant impact on the story's progression. It happened during a major conflict with other characters.