Ornn
The reason Ornn is currently in demand is due to the special items from this Champion being incredibly strong. From tank items to physical or magical attack items, Ornn’s gear provides powerful effects for the team composition. Therefore, Teamfight Tactics players can flexibly change their gameplay when equipped with items from Ornn.

According to insights from Teamfight Tactics experts, Ornn is best suited for the Sorcerer team composition. The item Luden’s Echo will significantly boost the damage of Lux and Ahri. Meanwhile, Swain can effectively utilize the tank items from Ornn.
Poro
If you pay a little attention, players will notice that the Augments of this Champion are often weaker than regular upgrades. Therefore, according to experts, Poro is becoming an extremely strong Champion at this time. The reason lies in the fact that players can increase the chances of receiving powerful augments, guiding their team composition.

For instance, the upgrade Hunter’s Fury from Warwick has a relatively low appearance rate if players choose a Champion other than Poro. The same goes for the “Hero Augments” of Sett, Kassadin, Swain, or Galio. Furthermore, the Poro Champion also proves to be especially strong in matches with many Diamond augments.
Caitlyn
Following the success of player Joe Bookmark, experts are gradually discovering the power of the Champion Caitlyn. Simply put, this Champion helps Teamfight Tactics players snowball very effectively in the early and mid-game. This allows for a variety of team compositions to be adapted based on the match situation.

Of course, the Champion Caitlyn has a weakness as its Silver tier augment is relatively weak. Therefore, players should switch to stronger upgrades when faced with the choice of a Silver tier augment. Beyond this weakness, Caitlyn is proving to be an extremely strong Champion for helping players snowball and maintain health and gold.
Conclusion
With great power and suitability for various team compositions, the Champions Ornn, Poro, and Caitlyn are highly regarded by many experts. Players should take advantage of these powerful Champions to climb the ranks more effectively in the current meta.