Both Duke (Skybound) #0A and #0B should be listed as variants of #1 (because that is what they are) and the #1 is even on the cover.
They are not variants. They were ashcan/preview (not ashcan sized) releases with a different indicia and cover date. Issue 1 printed on the cover doesn’t automatically make it a variant of #1. I’ve renamed it to Ashcan now. Thank you for posting