Was just made aware this existed, I haven't compared it to what we already have but this is from Nintendo's own site on the release dates for NES games. Though someone mentioned there are obvious inaccuracies even in it unfortunately. But it could be good for those that seem off or questionable.
https://web.archive.org/web/20040731024525/http://www.nintendo.com:80/consumer/downloads/nes_games.pdf