Why I can't see the realy good avatars via API?

Hi folks! I’d like to subscribe to one of the API plans, but as I understand it, not all avatars are available there. For example, in the browser version I see avatars like Lia, Olivia, and Anastasia, but when I checked these links:
https://api.heygen.com/v2/avatars
or for voices:
https://api.heygen.com/v2/voices
I couldn’t find many of the best ones there. So it seems there’s no point in proceeding further. Please correct me if I’m wrong.