I can help with La'Shea, Stevenson, and Sanobia:
It's just the popular name prefix
la- attached to
Shea. Click on
Shea's hyperlink for more info; and also click on
Shay, because in some cases
Shea's an alternate spelling of
Shay and visa versa.
In French, "la" means "the". So La'Shea could be translated to mean "the
Shea".
Stevenson merely means "son of
Steven". Again, just click on
Steven's hyperlink for more info.
Sanobia
could be a form of
Zenobia. However I'm not sure about that.
I'm sorry I can't help with Lytrell. Maybe someone else here can offer something about it, and perhaps more info on your other names too.
Miranda