Different characters, same voice

[piglet27]

The King in Cinderella is the Dad of Prince Phillipe in Sleeping Beauty.
Just a side note to your discussion of voices.

[DreamerQ18]

Lea Salonga:

Princess Jasmine : Singing Voice
Mulan: Singing Voice

[Disney Guru]

Jodi Benson also voiced a similar Ariel-esque character in Fox's Thumbelina. It's not a Disney film, but it's an animated one all the same (and it looks like a Disney film too).

Jodi Benson also voices Jenna in the Balto sequels. Ah heck, she's voiced alot of pointless characters! She should just stick to being Ariel!

Anyway I found some other ones you may or may not have recognized

Ben Wright
101 Dalmations - Roger
The Little Mermaid - Grimsby
There was an interesting story about how know one knew that Ben Wright had done another Disney character before (while working on Little Mermaid) until after his death

Mary Wickes
actress I know best as Sister Mary Lazarus from the Sister Act films
was also:
101 Dalmations - unknown additional voices
Hunchback of Notre Dame - Laverne

Hayden Panettiere
A Bug's Life - Dot
Dinosaur - Suri

These arn't Disney.

But Mary Wickes starred in 4 of the Doris Day Films

She was in

I'll See You In My Dreams
On Moonlight bay
By The Light Of The Silvery Moon
It Happened To Jane