Question Summary:
Who are the Madkhalis?

Question Detail:

Who are the Madkhalis? Are they from the Ahlus Sunnah Wa al-Jama’ah?

Answer :

In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
The Madkhalies are sub group of the Salafī movement. They are named after the scholar Rabie’ b. al-Hādī al-Madkhalī a former head of the Sunnah Studies Department at Islamic University of Madinah.
The Madkhalies have been noted for their opposition against another sub group of the Salafī movement known as the Jihādiyyah. 
They have been described as politically quietist, avoiding the organized political efforts of the mainstream of Salafism and even going as far as to declare those who participate in modern political system to be heretics.
And Allah Ta’āla Knows Best
Muntasir Zaman
Student Darul Iftaa
New York, USA
Checked and Approved by,
Mufti Ebrahim Desai.
www.daruliftaa.net