List of (Online) voices that can be found on the Speak drop down menu for Snap and Read on Chromebooks.

English Voices:
Kate(Online)
Allison(Online)
Lisa(Online)
Michael(Online)

Arabic:

Ar-XA-Wavenet (Online)

Ar-XA-Standard (Online)

French :
Renee (Online)

German:
Birgit(Online)
Dieter(Online)

Italian:
Francesca(Online)

Korean:

Ko-KR-Wavenet (Online)

Ko-KR-Standard (Online)

Portuguese:
Isabela(Online)

Spanish:
Enrique(Online)
Laura(Online)
Sofia ES-LA (Online)

Sofia ES-US (Online)

Swedish:

Ingrid (Online)