What you're asking me to do is to make suppositions based upon a few verses. Since Satan is rarely mentioned in the Old Testament, therefore the ancient Jews believed "X" about Satan. That's rather difficult to do. I can only go by what's recorded and I don't have access to records.
I will caveat all this in saying that, assuming you were correct and our Jewish forefathers believed this about Satan, what would it matter? It doesn't affect the inspired writings which are record through men by God. Christians can get a more complete picture of Satan through the New Testament which unbelieving Jews reject. The picture we have is based upon what believing Jews recorded.
Doctrine evolves as our understanding does. As an Orthodox you most certainly should understand this. Jewish doctrine is totally wrong as far as a Christian believes. Anything our Jewish friends believe about Satan not based upon the completed text is, to a Christian, incomplete at best.
It matters, HD, because the Christian concept of Satan being the same as the devil, which appears only in the New Testament, comes from the so-called 'apocrypha,' the books that were apparently credible to the Apostles who wrote the NT, and to the Church Fathers who put together the Chirstian canon (including the 'apocryphal' books), but were rejected 1,500 years later by Luther and his followers.