Every listicle about which Star Wars characters go in which Hogwarts houses is bullshit. They always make Leia a Ravenclaw or a Gryffindor. Leia is a Slytherin. She was raised a princess but even that wasn’t enough for her, she was like “I’m gonna overthrow the government, bitches.”
And Han Solo is not a bad-ass Slytherin, he is a Hufflepuff, because every five minutes he is dropping his own agenda to help his friends not die doing whatever crazy shit they’re about to do.
The biggest Gryffindor in the whole trilogy is R2D2, because every beep of his can basically be translated as “Hold my beer and watch this,” usually followed by him getting zapped by something and falling over.