Tennessee Ernie Ford- "Sixteen Tons".
Two hits by Christopher Cross: "Run like the Wind", and "Sailing".
Peter Tosh- "Legalize It" (love of weed, not romantic love).
Tom Leherer-"Poisoning Pigeons in the Park"
All of those Jan and Dean, and Beach Boy songs about surfing and hotrods.
Tons of political and protest songs. "Give Peace a Chance", "Blowin in the Wind", "We Shall Over come". And Patriotic anthems (love of country, and not romantic love).
Gospel, Hymns, Spirituals, Christian rock songs, about God and not about human lovers.
Most of Weird Al Yankovic songs are about food, or hamsters from outer space, or about having a "Party at the CIA".