The only real differences I see are rather minor.
Like Minerva seems more.. cerebral and passive than Athena.
Not more intelligent, but less focused on warfare.
Tinia is the ecrustian sky god. His name is one letter away from being Tina.
Not exactly the most intimidating name.
“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