Hazrat Data Ganj Bakhsh writes in Kashf al-Mahjub on page 172 that ?I will only mention the names of individual Sufis and leading spiritualists who have lived in my time or are still alive, excluding the formalists (ahle-I rusum)?.
Sufis in Ghazna
Hazrat Abul Fadl bin al-Asad, Hazrat Ismail al-Shashi, Hazrat Sheikh Salar-I Tabari, Hazrat Skeikh Abu Abdullah Muhammad bin al-Hakim known as Murid, Hazrat Said bin Abi Said al-Ayyar, Hazrat Khwaja Abul Ala Abd al-Rahim bin Ahmed al-Sughdi, Hazrat Skeikh Awhad Qaswarat bin Muhammad al-Jardizi (May Allah be pleased with them all).
Sufis in Quhistan, Adharbayajan, Tabaristan and Kumish.
Hazrat Sheikh Abu Tahir Makshuf, Hazrat Khwaja Hussien Simnan, Hazrat Sheikh Sahlagi, Hazrat Sheikh Ahmed bin Sheikh Khurqani, Hazrat Adib Kumandi, Hazrat Sheikh Abu Abdullah Junaidi, Hazrat Padshah-I Ta?ib, Hazrat Sheikh Faraj also known as Akhi Zanjani (May Allah be pleased with them all).
Sufis in Faris
Grand Sheikh Abul Hasan bin Saliba, Sheikh Abu Talib, Sheikh Abu Ishaq (May Allah be pleased with them all).
Sufis in Khurasan
Hazrat Sheikh and Mujtahid Abul Abbas, Hazrat Khwaja Abu Jafar Muhammad bin Ali al-Hawari, Hazrat Khwaja Abu Jafar Turshizi, Hazrat Khwaja Mahmud of Nishapur, Hazrat Sheikh Muhammad Ma?shuq, Hazrat Sheikh Syed Muzaffar bin Skeikh Abu Said, Hazrat Sheikh Ahmed Hammadi of Sarakhs, Hazrat Sheikh Ahmed Najjar Samarqandi, Hazrat Sheikh Abul Hasan Ali bin Abi Ali al-Aswad (May Allah be pleased with them all). Hazrat Data Ganj Bakhsh met 300 Sufi Sheikhs in Khurasan.
Sufis in Transoxania
Hazrat Khwaja and Imam Abu Jafar Muhammad bin al-Hussien al-Harami, Khwaja Abu Muhammad Banghari, Skeih Ahmed Ilaqi, Khwaja Arif ad Hazrat Ali bin Ishaq (May Allah be pleased with them all).
Sufis in Kirman
Hazrat Khwaja Ali bin al-Hussien al-Sirgani, Hazrat Sheikh Muhammad bin Salama.
Sufis in Syria and Iraq
Hazrat Sheikh Zaki bin al-Ala, Hazrat Sheikh Abu Jafar Muhammad bin al-Misbah al-Saydalani, Hazrat Sheikh Abul Qasim Suddi.