Would Hey Bulldog by The Beatles count? It's a relatively obscure song they just threw onto a soundtrack album most people probably didn't even know existed but its kind of been more appreciated in recent years.
It’s a good song.
(I only knew about it because I’ve actually seen Yellow Submarine)
(While I don’t have seizures and I didn’t have one the Lucy In The Sky with Diamonds bit is the Electric Soldier Porygon of 60s animation
Great White actually did a cover of that song.
Another example for me is Scorpions - Eye II Eye. Very different from the rest of the band's discography and hated by a lot of fans, but still has some gems: