key for TT is waveclear and aoe, as well as a decent earlygame.
The map is so small, it nearly only consists of chockpoints that leave you prone to aoe, and it snowballs rather hard so solid early is important.
The ways for roaming are short, so punshing in a lane fast and then roaming aomwhere with the rest of the team is really effective.
Mages are generally very strong in TT, the witchcap is a powerfull item, and the double dorans start with the manareg aura of the map gives them a very powerfull laneing where hey can outpush most other champs from afar, and they have powerfull aoe for fighting on the tight map-layout.
Graves and corki are very powerfull aswell, though atleast graves should probably have a 100% ban rate
if your opponents go for a more melee focused comp, juggernauts like illaoi or darius can punish them hard
if they go for a squishy comp, assasins with good waveclear and aoe like diana or ekko can be quite solid
CC tanks are pretty strong if paired with two DDs, especially malph vs AA heavy comps and alli/nauti for peel.
Renekton usually is a powerhouse due his massive early and great waveclear/aoe
J4 with the new aoe damag on ult should be really strong
Yasuo in a knockup wombo can be really powerfull.
But mostly stick to the rule of haveing aoe/waveclear, usually a utillity mage firstpick as they have few real counters, and then try to counter the opponents comp with your last pick.
And if you for some reason get graves, it's as close to a free win as it gets(unless your really horrible with the champ ofc)
