User blog comment:Sepublic22/Should Knighton be considered one of the Sixteen Realms?/@comment-27507964-20160309023133

In my mind it is probable that Knighton is connected to Chima and Ninjago but we do not know it is another realm. What if it was part of Ninjago, but unknown to the people on the continent we know. It could just be very far off and unknown. Or in the very distant future. We just don't know.

If you think about the concept it would make a lot of sense if they were connected because they both have humans. But then again, there are humans in Cloud Kingdom too. Either they were made by the same person (the first Spinjitzu master), one race was based upon the other, or one group emigrated to the other realm.