Interestingly, according to Mordenkainen Presents,
Drow Elves are "Any" alignment.
The Drow Arachnomancer, who is a devotee of the demon Lolth, is "Typically Chaotic Evil". The demon herself is Chaotic Evil.
However, the Drow Matrons who are priests of the Lolth faction are "Typically Neutral Evil".
Despite the fact that these priests worship a Chaotic Evil demon, they themselves are less likely to be Chaotic.
The Matrons continually negotiate between societal obligations versus personal freedoms, whichever happens to achieve the most gain, at the expense of any other groups or individuals. The Matrons "Typically" resemble psychopathic predators, manipulating groups or individuals.
The Lolth Drow systemic culture, wherever this demon cult gets established, is too orderly and group-oriented to be Chaotic. It would actually be Lawful Evil, such as its racism being group hate against other groups, which is Lawful Evil. But episodes of treason and treachery for individual gain occasionally disrupt this cohesive culture. The institution of Lolth legitimates this treachery.
There are individuals who worship the demon who are Chaotic Evil. But the Lolth faction itself is actually Neutral Evil. It is an accurate assessment to identify the Matrons as "Typically Neutral Evil".