My issue with Sinners is they play fast and loose with the vampire rules, everyone steals from Salem's lot by Stephen king (1979)
Originally, Bram Stoker had vampire make a familiar (which is not quite a full fledged vampire).
There have been movies even before Salem's lot where a vampire spent the whole movie making a vampire, I saw "love at first bite" (1950) at MLK summer camp, that black and white was remade Into the 1985 Jim Carey movie "once bitten" with a gender swap and a different ending. Sinners also takes from the Original tv show about sire lines but Coogler makes no clarifications about that, Intending for us to get lost in the weeds.