Here's what we know about each child and what might make them lean towards a particular house:
The Weasley Children:
* Rose Weasley: She's described as being very similar to her mother, Hermione, and is a talented witch. She's also shown to be fiercely loyal and protective of her family, just like her father. These traits could point towards Gryffindor or possibly Ravenclaw.
* Hugo Weasley: Not much is known about Hugo, but he's described as being very kind and gentle. This could point towards Hufflepuff, or perhaps Gryffindor, if he inherits his father's bravery.
The Granger-Weasley Children:
* Lily Luna Weasley: Named after her mother and aunt, Lily Luna is described as being a bit of a rebel, with a mischievous streak. She also enjoys pranking and making friends easily. This suggests Gryffindor or even Slytherin, if she follows in the footsteps of her namesake, Lily Evans.
It's important to remember that these are just theories, and each child could be sorted into any house! It's up to each fan to decide which house they believe is the best fit for each character.