Well, after more research and more knapping, here are the results:
I've been obsessing over the photo below and I'm pretty sure the arrowhead on the right is a Lott type arrowhead.
The arrowhead on the left was giving me a headache until I did a little experiment....

I made a couple arrowheads in the classic "Desert" shape (Desert General, in this case)....

And then I knocked off the tips of the barbs, ears, and point of one of the arrowheads....

And then mounted the arrowhead to a foreshaft with some darkened pitch and some sinew....





And PRESTO!....mystery solved.

It appears that the arrowhead on the left has been subjected to a lot of rough handling and all the sharp projections have been broken off. In fact, this is probably the case in a lot of the museum pieces I've seen....and I've often wondered why the quality of some of the arrowheads looks so poor on actual artifacts. Now I know.

Here are more examples of arrowheads that would be appropriate for Apache arrows:
(From left to right: Lott, Garza, Toya, Awatovi, Starr, Desert)
