Chart of every spec and their primary role?

Is anyone aware of a cart / list that shows every spec, and their subsequent role? Would a knowledgeable player be willing to make one?

I’ve primarily always played Rogues, minus one short and enjoyable Hardcore Classic stint at Holy Priest. So understanding the differences between elemental, enhance, disc priests, has always eluded me. Some words seem obvious like “resto”, “prot”, but there are others that seem to be more hybrid.

I’m looking for something super simple without too many details. For example, Shaman, Elemental, DPS, and maybe 2-3 bullet points of their primary value to a group?