Howar I completely disagree with you.
Fred Jordan was both,as soon as he was not singing songs he learned from his family ,he was a revival singer ,the definition of a traditional singer is songs learned orally form his family or local community, so when he sang fields of athenry, he became a revival singer.
in the same fashion a traditional singer can also be a singer songwriter[WillieScott], that is why these labels are ridiculous.
here is aculinary comparison: Rice, It can be a dessert rice pudding, or a main course; curry.