Sunni viewpoint about "vasi" or "hojjat" in each era?

According to Shiism, in every era there must be one person to guide people and to help them obtain spiritual growth and fulfill their responsibilities towards their society. This person is not a prophet because Muhammad (peace be upon him) is the last prophet but instead he is a complete man who has knowledge of everything from Allah and is infallible (Ma‘sūm). These are the 12 Imams, from Ali Ibn Abi Talib to Hojjat Ibn al-Hassan, Mahdi. This is because it is assumed that all men and women are fallible and their knowledge is very imperfect, therefore they must be guided by a Divinely appointed legitimate authority (called Imam, vasi, hojjat, etc.). See here and here . My question is: What is the Sunni view about this issue, i.e. having a person to guide people who is infallible and has knowledge of everything bestowed upon him by Allah? If the belief is that there is no need to having such a man, what is the reason?