I will context virtually all. I have never had this come up. I suppose it depends on what products you're looking at, but buying pure creatine is easy.
Creatine does tend to get added to pre-workouts chocked full with caffeine, but stimulant free pre-workouts exist and you can always buy it in bulk seperately either in pill or powdered form.
I pretty much don't see any creatine supplements with caffeine.