Need Help With 1921-D Morgan VAM

Welcome to Coin Community, Relic. The location of your die crack is quite common with 1921's of all 3 mints, and particularly so with Denver coins. So, as a standalone die crack, it doesn't define a specific VAM in and of itself. There is almost certainly a VAM for your coin - they're all VAMs - but in the absence of obvious die markers it becomes a pretty tedious proposition which might not be fruitful until you bring a microscope to bear.

The picture in your post is one of my images - 1921-D VAM-1J; I shot all of the 1921 VAMs you see posted on this site. I recognized it instantly and assumed you were using it to illustrate your point about that curved crack above the E.

If you've gone over the rest of the coin with enough diligence to see there are no other cracks (and it sure sounds like you have), chances are whatever variety yours might be would have no additional interest or economic value, and would be purely an intellectual exercise to identify. The only additional work I could suggest is to point your loupe at the wreath, wings and tailfeathers on the reverse for stuff that doesn't seem to belong there. These are not places you'd usually expect to see a crack or other feature, but there are a couple of varieties whose only notable pickup points are in one of those areas.

If it is possible for you to come close to the size and the clarity of that image, by all means throw them up here.