Wow, you are so opinionated here on the Gon. It also seems you know all and are always right. Hard to read your posts and feel your "know it all" attitude at times. This is one such time. I never mix up Elvis’s voice with anyone else. Fact is he has one of THE most recognizable voices in all of music history.
Using your argument I suppose no artist is original in the last 70 years plus. Like the Bible says " there is really nothing new under the sun". However, some artists do take and add to it and then own it!
Elling is great, no doubt. However, anyone listing to him within one album knows many of the influences he mimics. He also has taken, added to, and owns a unique style.
