Auto-translated
For me, Faidaen was the weakest. He had only 9 Ancient Ents left. In descending order of losses:
Godric - about 17 Archangels;
Railag - lost a little of everyone, but in the battle with Biara, he lost all the Assassins and almost all the Shadow Lords;
Zeheer - Exile! Exile!! Exile!!! He kills EVERYONE who appeared up to that point. I noticed this during the battle with Biara and...
Faidaen had a tough time in the battle, but he completed the mission on the first try.
And now, if someone didn't understand after playing through "Lords of the Underworld," I'll say this: Isabel with red eyes is BIARA! She transformed into Isabel and finished off the Griffin Empire in two add-ons. And Railag took the real Isabel "home." They can be distinguished by the colors of their "outfits": Isabel has blue, and the fake Isabel has red. If it's not clear, look at the crystal hanging around Isabel's neck. The real Isabel has a green one, and Biara has a red one.
And now, the last thing: After the purification ritual performed at Tieru, Agrail became Railag. That's why they have the same letters in their names. Someone tried to convince people otherwise in some thread, but to be sure, watch the mini-movie after the 3rd mission of the 4th campaign, "Cultist," and watch the backstory in the 4th mission of the 4th campaign, "March," and the 5th mission of the 4th campaign, "Railag's Offer," which appears when loading the missions. Sorry for being off-topic.