When you want to express being together with someone or something, "in company of" is a common expression we often use. However, there are a number of other synonyms you can use for this expression to convey a similar meaning. For example, "in the presence of" can be used to indicate that you're with someone or something. Another common expression is "accompanying," which means going along with someone or something. Similarly, "in the company" or "in the company of others" can be used to suggest that you're with a group or people. Some other synonyms you can use include "with," "amidst," "surrounded by," and "among." These expressions help to add some variety to your writing and can help you avoid using the same phrases repeatedly.