Recently, Paramount+ aired the new series The Offer (2022), a dramatization of the making of The Godfather (1972). I haven't seen it but it seems to be following in the footsteps of the film Saving Mr. Banks (2013), which dramatized the making of Disney's Mary Poppins (1964). These two works are very different from documentaries: no voiceover, no interviews. Each one is instead telling a story-- about an existing story.
Was Saving Mr. Banks the first show or movie to dramatize the making of a real show or movie, or have there been others? I'm not interested in documentaries like Netflix's The Movies That Made Us (2019), nor in fictional meta-films like Tropic Thunder (2008).