As I write my own tools for IR Hunting and Post-Expoitation I like to have a large realistic set of AD accounts and also accounts with accentuated and not english characters to make sure my tools will work in large environments and also simulate multiple geographical locations since most customers are not US based. When creating realistic user accounts I have found no better source that using http://www.fakenamegenerator.com it allows me to order a CSV with a large amount of realistic looking users and their details.

To do this I first go to the Fake Name Generator page and select from the menu the Order in Bulk option, click on the checkbox to accept the terms of services and select as output Comma separated (.csv)