The Cho'Gath build for Top is Sunfire Aegis, Thornmail, and Heartsteel. This LoL Cho'Gath guide for Top at Platinum+ on 14.3 includes runes, items, skill order, and counters.
Cho'Gath Counters
51.4%
(-0.0%)
44.9%
(-0.3%)
1.9%
(+0.1%)
0.6%
(0.0%)
775
(+15)