Explanation:

- Qutub-Ud-Din Aibak: He was the founder of the Mamluk Dynasty but did not establish the group of forty nobles. He laid the foundation of the Delhi Sultanate.

- Balban: A powerful ruler known for his strong centralized administration but not for creating the Turkan-i-Chahalgani. He was one among these nobles.

- Iltutmish: He established the Turkan-i-Chahalgani, a group of forty loyal nobles, to consolidate his power. He played a crucial role in stabilizing the Delhi Sultanate.

- Ala-ud-Din Khilji: Another ruler of the Khilji dynasty known for his market reforms and military conquests. He was not related to the formation of the Turkan-i-Chahalgani.