xs:unsignedLong - derived from xs:nonNegativeInteger by setting maxInclusive to 18446744073709551615.

xs:unsignedInt - derived from xs:unsignedLong by setting maxInclusive to 4294967295.

xs:unsignedShort - derived from xs:unsignedInt by setting maxInclusive to 65535.

xs:unsignedByte - derived from xs:unsignedShort by setting maxInclusive to 255.