My concern is the lobe wear. Every lobe has wear on the edge. What I've read is that this is called edge loading and is due to the crown on the face of the lifter being worn down. "The lobes will first chip and gall" which is also what my lobes are doing.
Notice each lobe has a silver wear pattern on the edges.
Here is a quote from a crower cam/information pdf I'm reading
EDIT: I shared the picture with the rings because the lifter looks possibly concaved in the center. I'll inspect them more today.
"CAMSHAFT LOBE EDGE LOADING
A camshaft cannot withstand the load it receives
if the force is concentrated on the edges of the
lobes. The lobes will first chip and gall. Soon one
or more lobes will be completely wiped out. This
destruction can occur very rapidly. Wiped out
lobes, accompanied by cupped lifters, are usually
discovered due to noise or rough engine operation.
When a worn lobe is found on a camshaft, the
first reaction is to say it was “too soft”. But cast
iron camshafts are hardened as a unit, so one lobe
can’t be softer than another. If the lobes nearby
are examined, they will probably be worn on the
edges. The rest of the lobes would have eventually
failed, but one went first and tipped off the
operator that something was wrong."