The Fenders are a little unique... They're actually a tape-wound roundwound string.
I had them on my Jazz bass for a while - they feel more "normal" they have a relatively normal tension and feel to them - they're also fairly bright.
The ones you hear on the Let it Be recordings, Bowies "Diamond Dogs" tour or any of the Marc Bolan (T-rex) stuff, some Elton John, and War of the Worlds (everyone seems to love the effect Jeff Wayne got with the robot unscrewing) are actually Tape-wound flats... They're an acquired taste... They're made by Rotosound - their TruBass 88 strings.
I have a jazz bass with the Roto tapewounds on it which I play with a plectrum... You get a nice plasticy click with each attack and it's so warm it'll give you goosebumps with each note. You may have to widen the slots in the nut of the bass - they're monstrously huge strings and very low tension...