Not for the first time, I'm sitting here, listening to music I never heard of before reading about it on this this thread. Not to diminish others' contributions, it's often bdp24 whose deep knowledge sends me in a new direction. Today, I can't believe I've never known of Emitt Rhodes until now. That debut album is as good as bdp advertised and does remind me of McCartney and the Beatles. Similarly, Emitt's multi-instrumental ability and variety of tones and techniques in production is really impressive.
I would add Harry Nilsson as a point of comparison, though Nilsson was more zany and pop-oriented.