Which is the top No. 1 bank in the world?

Could you please clarify what criteria are being used to determine the "top No. 1 bank in the world"? Is it based on assets, profitability, market capitalization, or some other metric? Additionally, it's important to note that the financial industry is constantly evolving, and the ranking of banks can change rapidly based on various factors. So, while there may be a widely recognized leader in the industry at any given time, it's important to stay informed and aware of the latest developments.