Darcy has the most even tone you've ever experienced.

Rose sounds like she's flirting no matter what she says- it's honey in your ears.

Lex's voice is a slight baritone and very smooth.

Heidi seems even like Darcy until you start talking about the outdoors or gardening.

Lucy is also sweet and bubbly, and everything she says sounds nice- even on the rare occasions where she's not.

Cass has a Louisiana accent. She sounds like the serious balance to Maddie's nonsense.

I'll bust out my one media reference for Portia- she sounds like the Japanese VA for Najimi from Komi.

Maddie's voice is kind of a stereotypical bimbo-y voice (soft and breathy), although of course when she's not bimbofied she doesn't sound like an airhead.

Jenny has a calming voice, befitting her status as #1 milf

Ginger regularly sounds very feisty.

Jason's voice changed slightly after his bull-ification; it's very deep now.

Tie

Bonus- Cece sounds like a big lame-o