Angira Muni was the leader of the followers of the Atharva Vedas

Expressions researched:
"Aṅgirā Muni, who strictly followed the rigid principles of the Atharva Vedas, was the leader of the followers of the Atharva Vedas"

SB Canto 1

In the śruti-mantras also it is stated that Aṅgirā Muni, who strictly followed the rigid principles of the Atharva Vedas, was the leader of the followers of the Atharva Vedas.

SB 1.4.22, Translation and Purport:

The Sumantu Muni Aṅgirā, who was very devotedly engaged, was entrusted with the Atharva Veda. And my father, Romaharṣaṇa, was entrusted with the Purāṇas and historical record

In the śruti-mantras also it is stated that Aṅgirā Muni, who strictly followed the rigid principles of the Atharva Vedas, was the leader of the followers of the Atharva Vedas.