What about the Paladin, except that he is, to put it simply, at the junction between the two aforementioned classes?
Able to effectively support its allies but also to survive enormous damage suffered, the Paladin is a very strange kind of Tank support, the group’s Swiss Army Knife so to speak.
By virtue of this dual role, the Paladin benefits from a place in the Tier S of this ranking since it is one of the essentials.