Bridgerton may be about the Bridgerton siblings finding their true loves, but no matter what, each character relies on their family members the most, and everyone secretly has their favorite sibling. After three seasons of Bridgerton, every Bridgerton sibling has a clearly defined personality and motive. Eloise is the black sheep of the family, while Anthony is the responsible one and Colin is the adventurer. Along with that, audiences have gotten a taste of the Bridgerton siblings’ relationships with each other, giving big hints as to who might be each others’ favorite brother or sister.
https://screenrant.com/every-bridgerton-child-favorite-sibling/