Al-Islah and the Ikhwan to which it belongs is a Salafi organization, Al-Islah was formed in 1981 and was immediately banned on the same ground that the Ikhwan was banned- they operated underground as an illegal movement until the fall of the Somali Democratic Republic in '91
Also Al-Islah was apart of the ICU government, they had a split during the Ethiopian invasion but the majority stayed with the ARS, Shabaab, ASWJ, etc. Infact due to this the Ikhwan actually congratulated Sh. Shariif Ahmed when he became president.
https://ikhwan.site/p-222191