Thank you so much, this is interesting.
But does it necessarily prove that it comes from
Tiana?
I'm not so sure because many names with similar sounds tend to become popular at the same time even though they are unrelated.
For example:
Madison and
Addison Riley and
KylieChloe and
ZoeKaylee and
Bailey and
Hayley
etc. etc.
Please rate my list:
https://www.behindthename.com/pnl/6232