Here are some other variations you might come across:
* Reagen: This is a common misspelling, often due to the similarity to the word "reagent".
* Ragen: This is a less common spelling, and may be intended as a more unique or stylized version.
* Raegan: This spelling is sometimes used, but is less common than the standard "Reagan".
It's important to note that the spelling "Reagan" is the most widely accepted and recognized version.