No, Kid Loki didn't kill Thor in the comics. Their relationship was complex but not to that extreme.
Yes, Thor did kill Thanos in some comic storylines.
Yes, in some comic storylines, Thor has killed Zeus.
Yes, Loki did kill Frigga in some comic storylines.
Yes, Loki did kill Odin in some comic storylines.
Yes, Thor has killed Thanos in some comic storylines.
Yes, he does. Thor's kid in the comics is Torunn. This character brings new elements and challenges to the Thor universe.
No, Thor doesn't adopt a kid in the comics as far as I know.
Yes, Thor has killed Thanos in some comic storylines.
In the comics, Hercules doesn't kill Thor. Their encounters are often part of complex storylines with various twists and turns, but not resulting in such a fatal outcome.
Thor doesn't kill Zeus in the comics. The storylines usually focus on their conflicts and interactions without going to the extreme of one killing the other. It's part of the complex web of comic book narratives.