Sort order by author

The author column sort order seems to have a discrepancy. If there is a reason for it please inform me so I understand how to find references when I seek them. Example:

The row, de Almeida et al. is between Almeida and Bates and Altman. But the rows De Crispin de Billy et al. and De Jong et al. are between Dauwatter and Pert and Death and Collier.

Similarly, van den Boogaart is listed in the 'B’s while Van Sickle is listed with the 'V’s.

I recommend ignoring the case of the initial modifier and listed with others of the same first letter of the main last name. If this sort order is different with different languages it would be really helpful to have a user option to specify the preferred sort order.

Happy New Year all,