Best practices for Audio Groups creation at runtime?

Hello!

In our game, players can choose a type of character voice from around 10 types, which comes with 15 sounds clips each.

We already have a list of around 100 sound groups on our group mixer and we are hesitant of adding all of these character voice sounds when in reality only 2 or 3 types will be used each match.

What would be the best way to load to the group mixer only the sounds that the player will use on that instance during runtime?

Thank you!