Following the latest update, these are all still Preliminary Covers. All of the Basketful of Heads covers are Preliminary except #3. Fantastici Quattro (Edizioni Star) #16 is the cover for Fantastic Four (Vol. 1) #244 with Italian trade dress.
You're saying yours don't have "Preliminary Cover" down the left side? Beyond that, they are slightly different covers, with different ones missing different things like UPC codes, price boxes, credits, and such. Fantastic Four (6th Series) #16 on Atomic Avenue has the Preliminary Cover as the thumbnail but the correct cover in the listing for the book.