Agreed it’s a silly part but a pain to deal with. The ones you showed above work ok if you modify them. However, they won’t work if you don’t cut a relief in the top. The OEM essentially twist into place using the notch. If you force the Ford/GM round top ones they deform or risk breaking the fragile OEM panel brackets (which only are glued or plastic welded 😞).Yep, I have some in stock of the OEM ones and my price is less, BUT by the time you ship them, etc. it's not worth the savings. This will help you out.
These are common fasteners you can get at Napa or Auto Zone, etc…for like $.25 each
D48 - Jeep, Dodge & Ford Door Panel Clips
If anyone wants ones that fit as OEM I have a bunch that are already “notched” and fit easily.