The best diapers for your babies or toddlers sensitive skin would be cloth diapers without all the chemicals or ink used to print the pictures on disposable diapers.
However if you prefer to use disposable diapers and are looking for disposable diapers for sensitive skin then you could use Pampers Swaddlers diapers or Pampers Pure.
Luvs are pretty good diapers as well for babies or toddlers with sensitive skin or look for diapers that have no prints on them and use no harsh chemicals.
Some other good diapers for babies and toddlers who have sensitive skin are Parents Choice diapers, Earths Best Diapers, Pampers Pure Protection and Bambo Nature diapers.
Those are all highly rated disposable diapers and work great for babies and toddlers who have sensitive skin.
However one brand of diaper may cause a rash while others may not so you might need to try some different brands of diapers if your baby or toddler breaks out with a chemical burn or rash.
The Honest Company diapers are also good for sensitive skin although they are a bit more expensive than other brands of diapers.