If you're looking for synonyms for the phrase "with diversification," there are a number of options at your disposal. "With variety" is one obvious choice, as is "with a range of options." Other possibilities include "with differentiated offerings," "with multiple choices," "with assorted alternatives," and "with a mixed bag." Depending on the context in which you're using the phrase, some synonyms may be more appropriate or clear than others. But no matter which phrasing you choose, the message remains the same: diversification is key to success in a variety of fields, industries, and endeavors.