I'm pretty sure that
Kayla is a made up English name, based on
Kay.
There are similar names that exist, but thye are pronounced differently. I'm pretty sure that
Keila, Kejla etc. are KY-la, not KAY-la.
Geila is GY-la in
German (harsh G, sort of like guy-la with guy being pronounced like the word.
I think some people named
Kayla were upset that there name has not real etymology and used the internet to link it to the Yiddish name.
But even if
Kayla existed as a Yiddish name I think it would probably also be KY-la. "kay" is prononced "ky" in all languages I can think of, pronouncing it "kay" seems to be an English thing.
Please rate my list:
https://www.behindthename.com/pnl/6232