I have a clear idea of these three types of companies, what are the most registered companies in general?

The most registered type of company may not necessarily be the most suitable for you, but it depends on your business plan: offshore companies cannot operate locally in the UAE, and their main purpose is to hold, isolate risks, rationalize tax avoidance, international investment, etc.; free zone companies are convenient for you to develop global business, not limited to local business in the UAE; Ministry of Economy companies are convenient for developing local business in the UAE, and it is easier to win bids for government projects.