I can make people with the same kind of magic radically different.
A kind hearted person with healing magic is very different from a homicidal sadist who uses it to keep victims alive.
Though, honestly, your characters seem nearly the same to me. They differ in strength, or in ability or in type of magic.. But basic personality? That seems nearly the same.
Is this deliberate?
“She'd become a governess. It was one of the few jobs a known lady could do. And she'd taken to it well. She'd sworn that if she did indeed ever find herself dancing on rooftops with chimney sweeps she'd beat herself to death with her own umbrella.”
― Hogfather