Sayyid al-Hasan was able to complete the journey his father had begun, strengthening the pillars of the Tariqa and consolidating its influence, gathering people around it. He was successful in this due to his exceptional talents in building wide-ranging relationships across Sudan, and preferably through his marriages to well-known Sudanese families. Al-Hasan was also very tolerant of the people of other Tariqas, which earned him acceptance and love from all sects.

Sayyid al-Hasan was succeeded by his son, Sayyid Muhammad Uthman al-Aqrab, who cooperated with the previous Turkish rule to suppress the Mahdist Revolution. The Khatmiyya's stance towards the Mahdiyya was one of opposition and enmity. The origin of this animosity goes back to intellectual and doctrinal constants that determined that the Mahdist call was false and not based on pure Sharia in its guidance.

Successive governments paid attention to the Khatmiyya. This attention is due to the power and influence that the Marghani family wielded over segments of the Sudanese masses.

Sayyid Ali al-Marghani, the successor of Sayyid Muhammad Uthman II, cooperated fruitfully with the Anglo-Egyptian condominium authority and, as a result, received support and endorsement from the government. This situation continued until around 1944, after which Sayyid Ali's policy towards the British changed, and he showed a clear inclination towards the nationalist current advocating for Sudan's liberation in Egypt.

Sayyid Ali was considered a spiritual leader and patron of the Unionist parties that participated in forming the political system before independence.

A dispute arose within the Marghani household between the families of Sayyid Ali and Sayyid Ahmad. The dispute was over influence and property.

Sayyid Ahmad remained the leading figure of the Khatmiyya in eastern Sudan, while Sayyid Ali controlled the areas where the Khatmiyya was present in northern, central, and western Sudan. From the Marghani household, and at all times even to this era, women emerged who played spiritual and religious roles in the Khatmiyya sect.

The beliefs and teachings of the Marghanis revolve around the general principles that most Sufis in the Islamic world adhere to. They emphasize spiritual exercises such as seclusion, fasting, devotion to worship, and remembrance.