Patch 13.19 hit Cho'Gath again, but Bruisers are still performing quite well. Popular Legends are Lee Sin for earlier Cho'Gath*3, Twisted Fate for best items and Ornn for Mogul/Anima Visage. Currently the strongest version rolls for Cassio*3 and runs her as main carry while your Bruisers hold the frontline. You can also run Shurima Emblem on Cho'Gath and run 4 or 6 Shurima in late game as an alternative win condition.
In most cases you want to roll with Level 4 in Stage 3-1 either to 30 gold or lower if you feel confident you can finish a 3 Star unit to stabilize. Recover your economy back to 50 gold and slow roll your interest for 3 Stars. Once you have Cho'Gath and Cassio you can start pushing Levels to add more Bruiser or Ixtal units with Wood Element to stack bonus HP for Cho'Gath until the end.
Bruiser Emblem usually goes on Cassio/Mordekaiser. If you find the Emblem late it can go on Ryze/K'Sante. Cho'Gath tends to prefer tank items like Bramble, Dclaw, Redemption, but also has other good options like Anima Visage. You can also itemize Reksai*3 or Ryze as additional win condition.