* Sam: This is the most common spelling.
* Samm: This is a less common spelling, sometimes used for a more feminine feel.
* Tham: This spelling is very uncommon and might be used as a unique or creative alternative.
* Sammie: This is a common nickname for "Samantha," and could be used as a stand-alone name.
It's important to note that these spellings are less common and might not be recognized by everyone. If you're looking for a unique spelling, it's best to choose one that is still easy to read and understand.