Complex sentence: There may be differences between different styles regarding how dṛṣṭi is practiced and which are used for specific asanas, however dṛṣṭi is a primary part of at least the Ashtanga Yoga, Hatha Yoga, Jnana Yoga, Bhakti Yoga, and Raja Yoga traditions.
Split into simpler sentences: There may be differences between different styles regarding how dṛṣṭi is practiced and which are used for specific asanas. Dṛṣṭi is a primary part of Ashtanga Yoga, Hatha Yoga, and Raja Yoga traditions.