Although the Teamfight Tactics version 10.9 was altered by Riot Games with the intention of reducing the power of maximum activation of Traits, these changes have not significantly affected the meta. To avoid being misled by Riot Games’ numbers, you should explore the following powerful compositions:
6 Innovator Composition

Although it was slightly weakened with the 6 Innovator activation (50 health and 5 damage reduction), this composition remains the most notable due to a small change with… The Infiltrator.
Specifically, with just 2 Infiltrators activated, the Infiltrator champions can still regain attack speed each time they eliminate an enemy. Therefore, Irelia Infiltrator will be the hottest name in Teamfight Tactics in the coming time. Especially when the Timekeeper has been massively weakened, this attack speed will be extremely beneficial for both Irelia and Ekko.
As for each Innovator champion, their roles remain quite clear as always; Fiora, Leona, and Vi are all tanks. Lucian can apply effects if there is an additional Sharpshooter. Irelia and Ekko will be the main damage dealers of the team.
Brawler Sharpshooter Composition

Though it was weakened in both the 4 Sharpshooter activation (50 health reduction) and 4 Brawler (1 less attack), this composition has not weakened significantly. Basically, the main Sharpshooters like Jinx, Lucian, and Miss Fortune can still freely deal damage in this composition. Especially as Yasuo’s skill usage mechanism has changed (now targeting the furthest enemy + 2 spaces), carries with ample items like Jinx or Miss Fortune don’t need to worry too much.
Rebel Gangplank Composition

After having its energy adjusted, regardless of whether it has energy items or not, Aurelion Sol will use his skill once after 3 seconds, making the most suitable items for this champion Morello’s Evil Tome, Dragon’s Claw, and Thornmail. Meanwhile, Gangplank’s energy has been increased from 75/175 to 100/175, allowing him to use his skills much faster unless hindered by a Trickster or “projector.” Notably, Gangplank’s Quick Attack Upgrade has also been buffed from a 1-second delay to a 0.3-second delay—stunning the enemy team extremely quickly.
Back to the Rebel team, you can choose a specific carry from Jinx, Aurelion Sol, or Master Yi (must pivot to another build) to arrange for maximum Rebel buffs. Additionally, Kayle or Miss Fortune are also very reliable options. The diverse damage sources from physical damage, true damage, and magic damage are sufficient for you to choose appropriate items for your carry.
Timekeeper Kayle Composition

Although Timekeeper has been significantly weakened, Kayle’s primary strength lies in the Blade Master along with the Guinsoo’s Rageblade stack, so with the 15% that Timekeeper provides at the start of the match, Timekeeper Kayle remains a powerful name in this meta.
As for other champions, since the 2 Vanguard activation currently provides 125 armor, you can temporarily use 2 Vanguards to tank instead of initially using Timekeeper. Regarding late-game strength, Kayle is still capable of carrying the team exceptionally well, as long as she has sufficient items and activations.