Neeko Mid

Due to the new mage items and a lot of other factors Neeko is sitting at a 52 wr right now. She is relatively simplistic and can be picked up easily as a cc mid range burst mage.

Playstyle

neekos passive is her most underutilised ability, It can be extremely helpful in confusing the enemy and make the second guess their decisions which normally gives you the element of surprise, this is pretty much vital to land a 3+ man ult in the mid game which can win a teamfight all on its own.
On the subject of your ult you should always try and cast it when you are disguised as it hides the effect, You should always ideally use your w near the end of the wind up so the enemy is less likely to be able to flash.

I will add more to this guide when I get the time and I hope you find this useful