Explanation:
The Bhakti movement in India was a socio-religious movement that emerged in the medieval period. It emphasized devotion to a personal form of God and sought to establish a direct and emotional relationship between the individual and the divine. The movement cut across caste, class, and gender barriers and had a profound impact on Indian society and culture.

The Bhakti saints can be broadly classified into two schools of thought: Saguna and Nirguna. The Saguna school believed in a personal form of God with attributes, while the Nirguna school believed in a formless and attributeless God.

Non-conformists:
The Bhakti saints belonging to the Nirguna school were often considered non-conformists because they challenged the existing social and religious norms. They rejected the caste system, rituals, and external forms of worship, and emphasized the importance of inner devotion and love for God.

Identifying the saint:
Among the given options, the saint who did not belong to the Nirguna school is Mira. Mira Bai, also known as Meera, was a prominent Bhakti saint from Rajasthan. She belonged to the Saguna school and expressed her devotion to Lord Krishna through her songs and poetry. Mira Bai believed in a personal form of God and considered Krishna as her beloved.

Other saints:
- Dadu: Dadu Dayal was a Nirguna saint who preached the philosophy of non-duality and unity of all beings. He rejected external rituals and emphasized inner purity and devotion.
- Kabir: Kabir was another Nirguna saint who challenged the existing religious and social norms. He advocated for a formless and attributeless God and rejected the distinctions of caste and religion.
- Nanak: Guru Nanak Dev, the founder of Sikhism, also belonged to the Nirguna school. He preached the concept of "Ik Onkar" (One God) and emphasized the importance of love, compassion, and equality.

Conclusion:
Mira Bai, the Bhakti saint known for her devotion to Lord Krishna, did not belong to the Nirguna school. She belonged to the Saguna school, which believed in a personal form of God with attributes.