We lined up with 4 Corners and 2 Safety's and just 1 Linebacker (Blake Martinez) most of game.
Snap counts:
Amos: 100%
Savage: 100%
Greene: 77%
Williams: 100%
Alexander: 100%
King: 58%
Brown: 37%
Jackson: 4%
The Packers averaged 3 CBs per snap, some 2 corner base sets, mostly 3, maybe 4 or 5 were out there on 3rd. and 30 and 3rd. and 40. But it was predominantly your standard issue 3-corner nickel defense.
From one snap to the next, you might call Greene a safety or an ILB depending on the offensive formation, who he's lined up over, and what he does. But in general, he played ILB. "Hybrid ILB" is the most useful term, a mix of ILB and box safety roles. There may have been some snaps where he dropped out of the box to a traditional safety role. Any way you cut it, your characterization is not correct. Base defense, lined up in the box over or slightly outside the tackle on the weak side:
That is indisputably an ILB regardless of the number on his jersey. But whatever you call Greene on any particular snap he is not a CB.
I don't understand the necessity of doing backflips to call a guy who who walks and quacks like a duck something else. His name may be Raven, but his predominant role was as that ILB duck. I fail to see how it is constructive to call a guy like Burks an ILB, then plug Greene into the same role and call him a DB.