If you had to name ten revivalist figures in the twentieth century, who would they be?

If I could share a collective boat journey with ten Islamic revivalist figures from the 20th century, they would be:

Shaykh Abul Ala' Maududi
Shaykh Taqiuddin an-Nabhani
Allama Iqbal
Shaykh Syed Nursi
Hasan al-Banna
Shaheed Syed Qutb
Dr Israr Ahmed
Shaykh Abdullah Azzam
El-Hajj Malik el-Shabazz
Ustad Ahmed Deedat

Individuals who I think were pioneers in global movements, in action and in thought, during a unique period of our history their ideas transcending borders, continuing to influence millions of Muslims today andmay even continue in different eras to come. Whether it be propagating jihad as a methodology to liberate Muslim lands from the occupation of foreign powers, providing an Islamic response to foreign ideologies or calling for a return of a polity which governs and lives by the divine texts - they all respectively played a "revivalist" role in raising these matters during the 20th century when those aspects of the religion were either in stagnation, decline or non-existent.

Whether they qualify as mujadids sent by Allah (swt) to revive the deen or not, wouldn't be unequivocally known to us today.

no doubt some of the scholars/activists you mentioned helped fill the religious/political vacuum left by colonial powers. They reacted to their situations to the best of their abilities and may Allah reward them for their immense contributions. My concern is whether any one of them has left literature or philosophies that will actually have a lasting effect on the psyche of the Ummah. Some of them actually followed, verbatim, the theories of their predecessors. For example, Dr Israr Ahmad was directly influenced by Shah Waliullah. Iqbal was a huge fan of Rumi and Ghazali. Allamah Maududi also borrowed heavily from earlier authorities and their list goes on. That said, none of the individuals you listed, despite their sacrifices/services for the cause of Islam reach the status of Ibn Taymiyyah, Ghazali and Shah Waliullah. Your list certainly mentions giant characters but most of them relied on earlier works for inspiration. Why don't we also aspire to master the works of earlier scholars who had a lot more quality and content to offer. This does not mean we don't admire later contributors, we must but not at the expense of neglecting earlier authorities.