Imo and I am sure there is a degree of biasness here as well.
Light vs L laps everything on the list, every arc. Part 2 brings it down a notch, where it's more debatable, but I am going with DN.
HxH, stunning and amazing. Has very high peaks, not many lows.
FMA - consistently good. Would say it doesn't reach the peaks of others, but doesn't have the lows of others either.
DGM - similar to HxH, with the author also having monumental hiatuses.
AOT - 70-75% of the story was absolute top tier, and up there with the all time greats. The rest and the final knock it down a peg or two.