https://www.ebay.com/itm/Kershaw-Al...de-Knife-3-Blade-Combo-Set/273759631822?hash=item3fbd5879ce:g:LwcAAOSwH4lchbS2
I use this fleshing blade for that purpose. You will notice the same kind of belly swell for removing the hide from the meat. But with the rounded tip, it should slide through nicely.
Edit: that's funny. It wasn't a vintage knife when I bought it. Now I see only one for sale. And the manufacturer does not even list the style anymore.