My list is a bit eclectic and in no particular order:
– Andy Williams
– Jars of Clay
– Burl Ives
– Mannheim Steamroller
– Third Day
– Kenny G
– Young Messiah
– Celine Dion
– Amy Grant
– Anna Wilson
– Bing Crosby
– Michael Smith
– Andrea Bocelli
– Destiny’s Child
– Charlotte Church
– Harry Connick Jr.
– Michael Card
– Russ Taff
– Linda McKechnie
– Sam Levine
– Northern Light Orchestra
– Andy Williams
– Jars of Clay
– Burl Ives
– Mannheim Steamroller
– Third Day
– Kenny G
– Young Messiah
– Celine Dion
– Amy Grant
– Anna Wilson
– Bing Crosby
– Michael Smith
– Andrea Bocelli
– Destiny’s Child
– Charlotte Church
– Harry Connick Jr.
– Michael Card
– Russ Taff
– Linda McKechnie
– Sam Levine
– Northern Light Orchestra
Who do you like? Respond here
WeirdGuy Creative 
Michael W. Smith is a real favorite of mine, plus I love Bing Crosby and Johnny Mathis.
Thanks Karen, for the additions! Both of them are on my listening list.