There is a name Uriel in Hebrew which seems to appear as Uriash and Urias
and various spellings close to this.
Orel is a nickname for Aaron. I don't know about Urysh.
One could check the first name registry of the late prof Esterson.
As Yossel is to Josef/Joseph (nickname/diminutive) my ear tells me Mysl
would be to Moshe/Movsha.