Ayato and Nahida will generate Dendro cores, which can then be grouped by Kazuha or Jean, making it easier for Thoma to activate them.

Source: https://gamerant.com/genshin-impact-best-defensive-team-compositions/

Kazuha, an Anemo support character, is considered the best neutral support and can weaken enemies' resistances and buff the party, despite lacking healing abilities.

Source: https://gamerant.com/genshin-impact-most-used-phase-2-spiral-abyiss-characters-4-0/

The first part of the update will feature the Electro user Yoimiya and the Pyro bow DPS Yoimiya while the second banner is reserved for Alhaitham and Kazuha.

Source: https://gamerant.com/genshin-impact-leak-cryo-catalyst-user-charlotte/

The most popular characters in Genshin Impact version 4.1's Spiral Abyss are Nahida, Kazuha, and Yelan, with Nahida having an impressive 83.1% usage rate.

Source: https://gamerant.com/genshin-impact-most-popular-characters-4-1-spiral-abyss-nahida-kazuha-yelan/

While Venti, Kazuha, and Sucrose are popular choices for their supportive abilities, Xiao was long considered the only viable Anemo DPS character.

Source: https://gamerant.com/genshin-impact-best-anemo-dps-xiao-wanderer-heizou-comparison/