From the US State Dept. :
http://www.globalsecurity.org/security/library/news/2004/05/sec-040521-usia01.htm
Terrorist Exclusion List Designees (alphabetical listing)
-- Afghan Support Committee (a.k.a. Ahya ul Turas)
-- Al Taqwa Trade, Property and Industry Company Ltd. (f.k.a. Himmat Establishment)
-- Al-Hamati Sweets Bakeries
-- Al-Ittihad al-Islami (AIAI)
-- Al-Ma unah
-- Al-Nur Honey Center
-- Al-Rashid Trust
-- Al-Shifa Honey Press for Industry and Commerce
-- Al-Wafa al-Igatha al-Islamia
-- Alex Boncayao Brigade (ABB)
-- Anarchist Faction for Overthrow
-- Army for the Liberation of Rwanda (ALIR)
-- Asbat al-Ansar
-- Babbar Khalsa International
-- Bank Al Taqwa Ltd.
-- Black Star
-- Communist Party of Nepal (Maoist)
-- Continuity Irish Republican Army (CIRA) (a.k.a. Continuity Army Council)
-- Darkazanli Company
-- Dhamat Houmet Daawa Salafia
-- Eastern Turkistan Islamic Movement
-- First of October Antifascist Resistance Group (GRAPO)
-- Harakat ul Jihad i Islami (HUJI)
-- International Sikh Youth Federation
-- Islamic Army of Aden
-- Islamic Renewal and Reform Organization
-- Jamiat al-Ta awun al-Islamiyya
-- Jamiat ul-Mujahideen (JUM)
-- Japanese Red Army (JRA)
-- Jaysh-e-Mohammed
-- Jayshullah
-- Jerusalem Warriors
-- Lashkar-e-Tayyiba (LET) (a.k.a. Army of the Righteous)
-- Libyan Islamic Fighting Group
-- Loyalist Volunteer Force (LVF)
-- Makhtab al-Khidmat
-- Moroccan Islamic Combatant Group
-- Nada Management Organization (f.k.a. Al Taqwa Management Organization SA)
-- New People's Army (NPA)
-- Orange Volunteers (OV)
-- People Against Gangsterism and Drugs (PAGAD)
-- Red Brigades-Combatant Communist Party (BR-PCC)
-- Red Hand Defenders (RHD)
-- Revival of Islamic Heritage Society (Pakistan and Afghanistan offices -- Kuwait office not designated)
-- Revolutionary Proletarian Nucleus
-- Revolutionary United Front (RUF)
-- Salafist Group for Call and Combat (GSPC)
-- The Allied Democratic Forces (ADF)
-- The Islamic International Brigade
-- The Lord's Resistance Army (LRA)
-- The Pentagon Gang
-- The Riyadus-Salikhin Reconnaissance and Sabotage Battalion of Chechen Martyrs
-- The Special Purpose Islamic Regiment
-- Tunisian Combat Group (a.k.a. Jama a Combattante Tunisien)
-- Turkish Hizballah
-- Ulster Defense Association (a.k.a. Ulster Freedom Fighters)
-- Ummah Tameer E-Nau (UTN)
-- Youssef M. Nada & Co. Gesellschaft M.B.H.
Summary : A little more than 60% are Islamic groups. Whenever the name was not suggestive of religious orientation, I've assumed non-Islamic.