nope, Bellatrix valued her family's beliefs so much that she was immediately a Slytherin. Ron grew up in a family of Gryffindors, his values match t heirs so while he could've been a Hufflepuff, he is in Gryffindor. To this day idk why snape was in Slytherin because he didn't have much ambition but he was driven by a twisted loyalty to Lily
Gryffindors follow what is right and wrong. all hermione's actions are because she is doing what she believes is right, so so strongly!! It might be morally wrong but if she believes she's in the right, she's going to do it