When it comes to referring to individuals within our own species, "your fellow man/men" is a popular phrase. However, there are many other synonyms that can be used to describe people in a more nuanced way. For example, "your brethren" may be used to refer to individuals within a specific group or community. "Your comrades" is a term that implies a shared purpose or experience. "Your peers" implies a level of similarity in age or social standing. "Your fellow citizens" or "your countrymen" may be appropriate in political contexts. Overall, using different synonyms for "your fellow man/men" can add depth and complexity to your writing or conversation.