Hm, I can definitely see the similarities. It’s not impossible.

That’s just how cherubs work.  The benevolent side has green blood while the malicious side has red.

On Skaia the clouds showed the future.  Prospit’s moon would occasionally get close enough to Skaia that one on the moon could see the clouds.  Jade used to spend a lot of time asleep and awake on Prospit thus she saw the clouds a lot and knew certain events would happen.

John made them.

Nope

All the trolls sans Aradia only prototyped their sprite once and that was with their lusus.

The trolls stopped pestering Dave and Rose because after John died that timeline became a doomed timeline and the trolls could only see the alpha timeline in Trollian so they couldn’t contact them anymore.

In the stories that Jade and Jane told to Calliope in the last intermission.

No because original timeline John and Roxy will arrive in the retcon timeline when Homestuck starts updating again.

Retcon Timeline Roxy is dead.  Heiress Jane threw her stabby stick at Rose and Roxy jumped in front of it and died a heroic death.