Based on the datasheet, there are different options for pin-1 identifier, what part number should I order if I want a specific option.
You could get 2 options (irregular corner or irregular edge) in Figure 8.1 on page 50 of the datasheet as below:
The variability of the Pin-1 Identifier is a reality that the manufacturing flow of this product may come from multiple package vendors. Each of these vendors may implement slightly different Pin-1 Identifiers.
The part number could not distinguish this options. You may receive part with any option.