The followers of Gorakhnath were called :

Guru Gorakhnath (or Gorakshnath) was an influential 11th-12th century master yogi and a disciple of Matsyendranath. He is widely regarded as the founder of the Nath Sampradaya, a prominent Shaivite monastic movement [1]. His followers are primarily known as Nath-Panthis (or Nathpanthis), as they belong to the 'Nath Panth' or the path of the Naths. They are also frequently referred to as 'Jogis' or 'Yogis' due to their emphasis on Hatha Yoga and ascetic practices [2]. Specifically, Gorakhnath is credited with founding the Kanphata yogis, an order of ascetics characterized by their split ears [2]. While 'Jogis' is a common vernacular term for these practitioners, 'Nath-Panthis' is the formal designation for the sect's followers, reflecting their lineage and spiritual tradition centered around the nine Naths.

Sources

1. [1] https://en.wikipedia.org/wiki/Natha_Sampradaya
2. [2] https://www.britannica.com/biography/Gorakhnath-Hindu-yogi