"In step with" is a phrase that refers to being in agreement or in conformity with others. There are several synonyms that can be used to convey a similar meaning. "Aligned with" suggests a shared focus or goal. "Harmonious with" indicates a similar attitude or approach. "In sync with" implies a shared timing or pace. "Compatible with" suggests a shared suitability or compatibility. "Consonant with" implies a shared musicality or sound. "Agreeable with" indicates a shared preference or opinion. "Corresponding with" suggests a shared correspondence or connection. "Parallel with" implies a shared direction or trajectory. All of these synonyms convey the idea of being in agreement or in harmony with others.