What gets passed down through the years from generation to generation depends on many factors, sometimes luck, sometimes the work of people who came later.
A lot of “famous” pieces of classical music actually became famous because of its later use. Think about how many films used a piece of previously obscure classical music and made it mainstream (e.g. Death in Venice making the Adagietto from Mahler 5 his most famous symphonic movement or Apocalypse Now immortalising Flight of the Valkyries).
Similarly, use in big events like a royal wedding or funeral in the 19th Century immortalised works like Mendelssohn’s Wedding March from A Midsummer Night’s Dream and Chopin’s Funeral March from his 2nd Piano Sonata.
And you mention Bach. Bach was much more obscure than we think and we owe a lot of his recognition to later composers like Mendelssohn. Ironically Mendelssohn who was incredibly famous in his time suffers from obscurity thanks to his Jewish roots and Wagner’s (who was rabidly anti Semitic) attempts to erase his musical legacy.
Latest Answers