Guild
Although the Guild effect has been nerfed, compositions revolving around this trait still prove to be incredibly strong. By providing necessary stats like health, armor/magic resistance… for the entire team, Guild will help you have a well-rounded strong composition in the mid-game.

In the TFT World Championship Qualifiers (TFT CKTG), many top players have combined key champions like Ao Shin, Xayah, Deaja… with Guild and achieved high effectiveness. If you need an easy-to-play composition that retains health well and plays flexibly towards the end of the game, Guild is the right choice.
Dragonslayer
If you’ve been following the TFT CKTG qualifiers in Europe, you’ll notice that Dragonslayer appears quite frequently. By providing a significant amount of gold and items along with the ability to upgrade compositions quickly, Dragonslayer is currently a very effective health-retaining strategy for top players.

This allows Dragonslayer players to accumulate a lot of gold to reach level 9, achieving the power threshold of 8 champions along with Aurelion Sol and overpowering opponents towards the end of the game. Even when playing with a style that upgrades the entire composition to 3 stars (reroll), Lux is powerful enough to ensure damage output for the Dragonslayer composition.
Guardian
By the final versions of TFT season 7.5, players have started to realize just how powerful the Guardian system is. The champions themselves possess strong defensive capabilities thanks to their skill sets. Combined with the ability to create shields when low on health, Guardians become a very reliable frontline.

In the recent TFT CKTG qualifiers, many compositions revolved around the absolute protection of Guardians. Whether you play fast with a 1-cost 3-star key champion like Ezreal or continuously level up and use Daeja, Guardians provide very good synergy. This allows players to be more flexible in choosing key champions towards the end of the game instead of adhering to a certain mold.
Conclusion
The compositions mentioned above are all very strong in both solo rank and TFT CKTG tournament environments. If you are looking for effective ways to climb the ranks, these 3 compositions are the most suitable choices.