Who is Vito Corleone's favorite child?

Could you elaborate on the dynamics within the Corleone family, specifically regarding Vito Corleone's affections towards his children? Which of his offspring does he seem to hold in the highest regard, and what might be the reasons behind his favoritism? Is there a particular child who stands out as Vito's favorite, and if so, how does this affect the relationships among the siblings and within the broader family structure?