This was previously answered by Shariful96421 who said you will not get access to most of the multilingual voices on Tier 1. You can find that answer here: https://appsumo.com/products/unmixr-ai/questions/voices-available-on-appsumo-1430681/

In tier 1 i have access to 3 multilingual voices: Remy, Ryan & Brian. Brian is great i use it alot.
Looks i am going to upgrade to tier 2 hope all multilingual voices will be included.