Since you made up the name, I guess you can take your pick.
You just changed the spelling of Tea, so technically your Tayah should have the same meaning. The meanings I found for Tea are "white" and "goddess".
You could also say that Tayah is a form of
Taylor. Click on
Taylor for its meaning.
OR you could say that Tayah is a form of Taya, which means "valley field" in Japanese.
Raelynn is a combination of
Rae (meaning "ewe" or "advice") and
Lynn (meaning "lake"). Click on the names for more information.