I could guess easily if I had interacted with any of the alts, but I havent. Personally, I'm convinced ButteredToast is a puppet account and that you're playing that role out of habit. I'm convinced that whoever is sitting behind the keyboard is not too horrible a person though.
If you hadn't posted those sexy sound bites where you sound like Clint Eastwood I would've guessed that you're probably Inquirer. His voice is also highly attractive. I imagine whenever he opens his mouth, girls crowd him, all offering their bodies to his vocal cords. He doesn't sound like a nerd who lives in his mother's basement so I was honestly very surprised. I myself am not gifted with such a pleasant voice, so I am jealous. I sound much more like how Inquirer is supposed to sound like.
TC sounds like TC. Luna sounds like luna, with a strong local accent that I can't place (maybe Southern?). Spatial I've never heard talk, but I'm curious about how he sounds like. It's quite telling that nobody has heard LiYang. A person becomes real only after you've seen their picture or heard their voice. You don't sound like buttered toast. Maybe what you did was audio manipulation after all?
Inquire certainly is suspect, given that he got his baby cousin to hold up a sign saying "inquirer" in front of a camera, posted the photo here, and claimed it's him.
Anyway, to prove that you didn't use any audio tampering software, would you mind posting one more voice clip here BT?