I judge animation strictly off gameplay. Cutscenes are not relevant in my eyes.
FF 15
AC Unity
TLOU 2
Uncharted 4
HZD and HFW
Spiderman
God of War
Killzone 2
RDR 2
I find Ubisoft titles to have animation better than creation engine games, but below nearly everything else.
I also judge them in terms of gameplay, as in, how appropriate they are based on the rhythm of the game and of course on the artistic side as well as the technical side.
I agree with most of the games on your list. (I haven't played FF 15, and it's been a long time since I played Killzone 2!)
From the above, I'd say that Spiderman has the best. Very well suited to the gameplay (and perhaps subjectively, my taste in gameplay), technically and artistically excellent.
Naughty Dog is, well, Naughty Dog, but I have to say, that although the animations are industry defining, they do not always work without a glitch.
Of course, the interpolation they are doing between animations cannot be perfect every time, and is a step above everyone else's.
I'm playing HFW right now, and although the animations are amazing, they too have a problem with animation transitions and contextual animations, to the point where it sometimes affects gameplay.
GoW and RDR 2 have great animations artistically, the rhythm of those games is a lot slower than average and this lends to more deliberate animations, with the added latency that those animations bring.
(Aiming your gun in RDR takes a lot longer than in most 3rd person shooters)
This is not bad in any way shape or form, it's just a mater of preference in gameplay.
I think that animations should serve the gameplay first and foremost, and the games on your list certainly fall into that category, irrespective of whether I like the gameplay they have to offer.
Old AC games had amazing animations, but quite rigid gameplay.
The new ones have a more active, less restricting gameplay, and as a result, less refined animations, that otherwise serve the gameplay, without looking robotic or crude (as opposed to Beth games, that do look crude comparatively).
To me, they are quite a few steps above, when compared to games that have similar gameplay.
Just as the Division 2 or Guild Wars 2 for example, have very good animations, compared to similar games.