As stated before, I read every character as a monotone Doofenshmirtz. : p

But for voices?

I can see Jade’s voice being like Elle Woods from Legally Blonde.

Kanaya and Rose I see as that one emo chick from Mean Girls, or Raven from Teen Titans.

With Vriska I read her as like Maria Reynolds styled voice from Hamilton.

I read Equius as a stereotypical frat buff boy.

Eridan…I think I read him as like Mettaton from Undertale (when people do voiceover comics on youtube), just toning down the flair a bit.

I think I read Dave with the same voice I read Dimitri from Paranatural, which is like this low chill vibe voice.

That is all I can think of for now.