The Hogwarts school uniform pants are the exact same for all 4 houses and for Harry & Ron.
Harry Potter of Harry Potter and the Wizarding World
https://www.goodsmile.info/en/product/8889/Nendoroid+Doll+Harry+Potter.html
Ron Weasley of Harry Potter and the Wizarding World
https://www.goodsmile.info/en/product/8890/Nendoroid+Doll+Ron+Weasley.html
Nendoroid Doll: Outfit Set Gryffindor Uniform Boy
https://www.goodsmile.info/en/product/8892/Nendoroid+Doll+Outfit+Set+Gryffindor+Uniform+Boy.html
Nendoroid Doll: Outfit Set Hufflepuff Uniform Boy
https://www.goodsmile.info/en/product/10140/Nendoroid+Doll+Outfit+Set+Hufflepuff+Uniform+Boy.html
Nendoroid Doll: Outfit Set Ravenclaw Uniform Boy
https://www.goodsmile.info/en/product/10142/Nendoroid+Doll+Outfit+Set+Ravenclaw+Uniform+Boy.html
Nendoroid Doll: Outfit Set Slytherin Uniform Boy
https://www.goodsmile.info/en/product/10137/Nendoroid+Doll+Outfit+Set+Slytherin+Uniform+Boy.html