Which formatting group would commonly be used for monetary figures
O number
general
accounting
currency

Explanation:

The most common format for monetary figures is Currency.

Nevertheless, both Currency and Monetary formats are widely used for monetary figures.

Both show the currency symbol, which by default is $ but may be changed.

The accounting format aligns the currency symbol to the left and the numbers are separated, but they are not alligned to the right end. Also, it uses a dash for values equal to zero.

The currency format puts the currency symbol next to the number, which is alligned to the right. Additioanally, the currency format may use parenthesis and red color for negative values.

You will be fine using either of them.