A wharncliffe blade has a completely straight cutting edge and a spine that curves down to meet it at the tip. There is no belly at all, and the point sits low, in line with the edge.
With no belly, every part of the edge contacts a flat surface at the same time. That makes it excellent for cutting on a board or a bench, scoring, and any job where you want the whole edge working at once.
The low tip is easy to place precisely because it sits right where your eye expects it, which is why wharncliffes are popular for detail cutting and for opening packaging without damaging what is inside.
They look similar and get confused constantly. On a sheepsfoot, the spine runs straight and then drops abruptly near the tip, producing a blunt, rounded point. On a wharncliffe, the spine curves gradually along its whole length to a genuine fine point.
So a wharncliffe pierces and a sheepsfoot deliberately does not. That is the practical difference.
The term is not academic here. 25 of the products currently on our shelves describe this feature in their own manufacturer specifications, across 5 of the nine brands we stock. Examples in stock right now include Gerber Savvy Pivot Lock Gray, Case Highbanks Revoindie Red Burlap, Case Highbanks Slip Joint Black.
Everything below is pulled live from the catalog, so what you see is what is actually in the Woodlawn warehouse today.