Like detailed in the 1972 review, well after the fact, Topps made a retro rookie card. It seems there’s also a small fan community which makes “missing” cards from historical sets. A dedicated Carlton Fisk rookie card is practically the definition of a missing card. Interestingly, while Topps made a new card layout for their hypothetical rookie card, the internet made cards following the standard 1972 design. Spoiler alert: the community’s designs are better, and big part of that is them not feeling beholden to the original rookie card’s picture.
While the last two cards are mysterious results from Pinterest, the first one is from the great Cards That Never Were. (Card concepts from that site will make a few appearances throughout this list.)