you are missing the point. In English Jared, is pronounced with a J, not a Zh. You are supposed to write how it is pronounced. J in french sounds like Ж. But we are trying to convey the English pronunciation, in which case it starts with a Дж. Kwatts, Дж is how Russians write English J. If you say it quick enough, it even sounds like it. But anyway, alot of Russians recognise it as the foreign sound. Jazz = Джаз.
The words you listed are Frenchified. James in russian is Джеймс
To write the English J sound in Russian you use Дж. I'm sure if you realy listen to the way you say Jared you will see you don't actually say red. The unstressed syllable is reduced. If you say Ja, and then the word red, it just sound wrong. Trust me Джерад or Джарад in the best way to write it.