Update 9/6/15 with more covers.  I now have the current slate of 41 known covers represented.

This October Marvel is releasing Hip-Hoop Variant Covers for 27 different comics.  As far as I can tell this is the complete list of covers they will be releasing.  I saw reports of there being 50 different covers but that changed to 25, and then I was able to find 31.  I’ll update this post with any additional covers if they wind up actually creating them.