What are the two types of data?

Could you elaborate on the two types of data that are commonly referred to in the realm of cryptocurrency and finance? Are you referring to on-chain data, which provides insights into the transactions and activities happening on the blockchain, and off-chain data, which encompasses external factors such as market sentiment, news events, and regulatory developments? Or is there another classification of data types that you have in mind? Clarifying this distinction would help me better understand the context of your question.