John Ross was the name of a prominent Cherokee leader who lived in the 19th century, but it can also be used as a name or reference to anyone with the same name. Some synonyms for John Ross include Johnny, Jack, Jonathan, and J.R. These names can be used interchangeably, depending on the context and preference of the person referred to. For instance, Johnny is a common nickname for anyone named John, while Jack is another common variation. Jonathan is a more formal version, and J.R. is often used as a nickname for someone with the initials J.R. instead of their full given name.