The Coen Brothers explore familial bonds and sibling dynamics throughout their filmography, with works like 'Blood Simple' and 'No Country for Old Men' examining loyalty, betrayal, and moral complexity between characters.

Lanthimos creates darkly surreal explorations of family relationships and brotherly connections in films like 'The Killing of a Sacred Deer' and 'Poor Things,' where kinship dynamics become sites of psychological tension and ritualistic behavior.

Loach's socially conscious films like 'Kes' and 'I, Daniel Blake' poignantly depict brotherly love and familial interdependence amid class struggle and economic hardship.