I missed seeing this thread the first time by, but am thoroughly enjoying it now.

First, the songs I am used to hearing are for the most part what I call gospel songs rather than hymns. I'll try to leave them for another thread, another day.

When I used to visit my older sister as a child, I always loved to go to the Lutheran Church she attended because I knew almost for certain that I'd get to hear "A Mighty Fortress" which we never sang.

I have never heard it except by the Mormon Tabernacle Choir, but "Come, Come Ye Saints" surely has to qualify, though I am afraid the tune and the MTC are what give it my vote.

"In Heavenly Love Abiding"