The consensus among Islamic denominations on the magnificence of Imam Ali’s character
regarding the characteristics of Imam Ali (a.s.) - the brilliance and prominence of his pure faith, the heavy burden of jihad that he shouldered from early Islam to the end of his life, the unique justice he administered which keeps attracting Muslims and non-Muslims alike, his unique, pure worship and supplication, and the other prominent features that he enjoyed.
The Commander of the Faithful (a.s.) is a personality whose greatness, characteristics, and high status in Islam are not debated among Muslims. Therefore, we can confidently claim that the Commander of the Faithful (a.s.) can serve as the common point among all sects of Islam.