Please say if there's a better place to ask this question.
On two website for making video animations, Kreado and HeyGen, there is a selection of "text-to-speech" voices. The user inputs a script in text and selects a voice, and the software generates the sound of that voice speaking the script. On both websites, the user has to be logged in to a free account in order to see the list of voices available: Kreado, HeyGen. Kreado offers 31 voices, while HeyGen has 92. Each voice is identified by a unique name, such as Christopher and Elizabeth.
With so many voices, it can be hard to tell the difference between one and another. However, there is one voice that is very different from all the others, but seems to be the same voice on both sites. It is the voice of a little girl, and both sites call her Ana. For those people here who don't have accounts on those sites, I've used the Windows Game Bar to save the samples each site provides of Ana's voice:
It's possible that both websites set their parameters for generating the voice of a little girl so similarly that their voices come out sounding the same, and it's possible that both sites just happened to give their little-girl voices as well as 15 other voices the same names as the other site, but that seems highly unlikely. What is more likely is that both sites have obtained these voices from another source, or perhaps Kreado is licensing its smaller selection of voices from HeyGen.
In either case, I'd like to know what the common source of these voices is. How can I find that out?