​​​So I asked Google AI and got the following summary:

• 8mm, 10mm, and 14mm: These are the most frequently used sizes, covering a wide range of applications.
• 12mm and 13mm: While not always considered standard, they are commonly used, especially in Japanese vehicles and some European models.
• 17mm and 19mm: These are also common sizes, particularly in automotive applications

EDIT: Exactly what comes in the set (minus the 19mm, which is bigger)