Surprised you think of 1001 so highly. I consider that a solid enough episode that is really elevated by two of the best action scenes in the entire series lol. I'd consider something like 982 much much stronger than 1001 despite the former of which having a much more notable highlights because its generally stronger directed.
I'm not sure what I'd say my top ten would be, though I think you mentioned a few of them, in no particular order (1006, 1013, 957, 982, 1004, 971, 972).
However, I'd probably add something like 950 to the list(the episode where Koyama really shows off his directorial chops), as well as honourable mentions for 960(the first episode of the Oden flashback).
Really, I think most of Koyama's episodes beside 984 are really worth mentioing for honourable mentions aside from his incredibly stand out ones.
Not sure whether I'd put them on the "best of the series" list, but I also remember really like 943(particularly the Udon scenes), as well as 945 and 946(946 in particular almost purely because its insanely well animated, particularly in its second half, which compensates for the rather pedestrian pacing of the episode). Episode 1000 and 978(though I was initially not terribly blown by away by it pacing wise I'll admit) as well obviously.
Episode 954(the Kawmatsu) is also an episode I remember quite fondly for its directorial flare, even if it is a bit of a slower paced episode. I think that works in the context of trying to tell Kawamatsu's story.
925 is also a pretty solid episode, but I feel like its adaptation didn't really have much to work with in terms of expanding on the fight choreography wise despite some basic things.
Overall, I'm not terribly great with lists lol.
Also, I believe the episode Luffy tells Tama that Ace is dead is either 894 or 987.
The thing about Wano is that it has a lot of "different types" of good episodes, which makes it hard to sort of make full collation. There are generally a handful of episodes considered perfect(like 957 or 982), but most usual have a few defects here and there that make them difficult to rank.