What counter would you Pick for the Listed Champions if you could always have that match up? You don't have to list all of them or give a reason why.
Top:
Jungle:
Mid:
ADC:
Support: 
Here are my Picks
Top:
V , 
V
Jungle:
V all
Mid: V , 
V , 
V
ADC:
V , 
V , 
V I guess
Support:
V , 
V I don't know for Leona owo
Top: 
Jungle:
Mid:
ADC:
Support:
https://lh3.googleusercontent.com/-q0iifQGz_Ls/VR4ihwcfcXI/AAAAAAAACSA/gW8IoFoTlMk/w800-h800/galadriel.gif
Just assume that the champion in the same slot counters the champions you listed above.
Top: 
Jungle: 
(WW can ult to clone or it can be cancelled using your ultimate, even if he ults you)
Mid: 
ADC: 
Support: 
Top 
vs Bruiser 
vs vs ( I don't own Trundle so he's the next biggest counter )
Jungle 
and 
are good against all of the champs you listed.
Mid Again vs 
vs 
vs
ADC 
vs 
vs ( especially now ) vs
Support 
Top: vs. , vs. and
Jungle: N/A
Mid: 
vs. and , vs.
Adc: 
Sup:
nobody counters mundo except for 
