I don't disagree, but read your sentence again...
Going to throw in a controversial one now. How about Gary Shaw? League Championship winner, European Cup winner, Super Cup winner, UEFA young player award. If injury hasn't cruelly ended his career early, then I believe he could have gone on to be the the best player in England (possibly Europe/World). Better player than Grealish. I know that for us fans who lived through the Saunders era then Shaw is reverred, but in the wider footballing world he's very much forgotten.