Apart from that is a common phrase used to indicate an exception or to transition to a new topic. However, there are numerous synonyms that can be used instead of apart from that. For instance, alternatives such as besides, moreover, furthermore, in addition, additionally, on top of that, and also are commonly used to achieve the same result. Similarly, phrases like excluding that, leaving aside that, disregarding that, and except for that can be used to indicate an exception or to omit a particular detail. Overall, writers and speakers can mix and match these synonyms to maintain the flow of their conversation or written work.