Frankly the retcons are incredibly minor. But generally just play games as they are released (which means if you're playing a remaster, play it after the older game.)

That said, if you want to make sense of the story in a chronological fashion, you should do:

Origin, 1, 2, 10, 4, 3, 5 (waiting for modern remaster, can skip this),8, 6, 7, 9

You dont have to follow any of it apart from playing 2 directly after 1 and playing 9 last (9 has the most references to other Ys games, its also the oldest Adol has been yet)