When it comes to categorizing or grouping things, the phrase "be classified among" is often used. However, there are several synonyms that you can use instead to convey the same idea. For instance, you can use the term "belong to" to refer to the group or category that something or someone is a part of. "Fall into" can also be used to describe the act of grouping similar things together. "Categorized as" and "placed under" are other alternatives that can be used instead of "be classified among." Ultimately, finding the right synonym depends on the context and the message you want to convey.