Hi Mark. Thanks! For MJIV covers, I discovered the following. Sometimes, the image for the pre-loaded regular issue is the same as my MJIV. For those instances, I made a copy and labeled it "xx-MJ". I can take a photo of mine, but then if I submit new or corrected info, you're still going to have a duplicate of the cover. A good example would be FF vol 1 issue 212 where I think it's of a Newstand rather than a Direct Edition (see attached).
For others, in the "picture file" I saw a few issues that were labeled "xx-a" and yet, there is no record for a "A" variant. Example: Fantastic Four Vol 1 issue 215. The regular cover has Spider-Man's head in the bottom left corner, which I understand is a Direct Edition. The 215-a cover has a bar code in that corner as well as a few other tell-tales that indicate it's a Newstand edition and possibly an MJIV. For this issue, the image looks exactly like mine so I just relabeled the 215-a to 215-MJ (ditto attachments).
Per your request, I'll upload images for my MJIV issues if they are visually different than the regular covers.