With Batman, Vol. 3 #158, there is a 4th version of the cover that looks like T, U and V.
To help fill in some missing pieces…
For the existing 158T, the barcode is 76194134182815842 and the back cover is:
For the existing 158U, the barcode is 76194134182815844 and the back cover is:
For the existing 158V, the barcode is 76194134182815843 and the back cover is:
Now for the missing C2E2 foil edition, the barcode is 76194134182815857.