Don't know of a better Anivia (DPS Mage). She's out of meta because DPS mages aren't meta really. Burst is king nowadays.
Ashe isn't picked because DPS and safety isn't meta, but burst and tank melting (Ashe can't do either). Wait until ADCs become absolutely useless and Ashe will be meta because of her ultimate, alongside Sivir.
Fiddlesticks is a niche pick and I would argue is doing fine. The only kind of meta where Fiddle would be good in is a meta in which the jungle is insanely hard to clear and ward trinkets are removed.
Ivern is a niche pick. Can't survive in a meta where junglers are actually useful. There is no better support jungler available.
Kalista is getting buffs and I would argue that there is no better mobile ADC than her, it's just that in a meta with Camille jungle she can't really survive.
Kindred are being played and there is no better alternative to a hyper scaling ranged jungler. The thing is that Graves has way better early ganks and burst, but that is a completely different role than Kindred who are teamfighters and hyperscaling DPS junglers.
Kog'Maw is a hyperscaling ADC who is not meta and probably won't be because Kai'Sa exists. He is not played that much because the meta focuses on individual strength rather than specific comps. Also, Kai'Sa's build is way more flexible since she can build against squishies and tanks, while Kog'Maw doesn't have a good build path for popping squishies.
Nautilus is just a shit jungler, his numbers can never be high enough for him to be both a good jungler and a balanced toplaner. But since Sejuani is getting nerfed, maybe he'll see more play.
Quinn is a niche pick and I doubt there is any better Ranged AD Assassin than her.
There is no better DPS teamfighter than Rumble and he is seeing enough play, idk what you're talking about.
Skarner is a niche pick but there are way better gankers available. There is no better juggernaut jungler than him.
Trundle can't be meta because toplaners fulfill a slightly different role and because junglers have better ganking potential. Trundle was never about healing a bunch but rather disabling the tanks and carries, i.e. disruptive potential.
Volibear is just a shit champ that needs a rework. There are better alternatives to him but I wouldn't say he isn't played.
Wukong is just hit with the nerf hammer every time he is played, since he got revently nerfed I wouldn't say he's not meta, he's just too weak to be played at all. I don't think here are better assassin teamfighters than him, except maybe blue Kayn because of his ultimate.
Yorick is played but he can't ever be made viable for pro play because then he'll be broken in soloq. Don't really think there is a better split pushing juggernaut in the game.
Zac is played a lot so idk why you put him here.
Zilean is a niche pick but nowadays the laning phase dictates a lot of the game so sacrificing it for a chance to revive your dumb ADC who is weak because they had no laning phase is not a good idea. Janna is just a better version because she has more reliable CC and an actual laning phase.
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