When you call your cats, do you like to repeat their name constantly? Like, "Here, kitty kitty kitty kitty kitty!"
If so, Mia is going to sound like "Here, me yummy yummy yummy yummy". Try it.
Strider is hard due to the change between the st and d sounds.
And cupcake has way too many vocal stops.
I think you may need to hit the drawing board again.