Hello,
No, there are other options how to do that, however the one you have mentioned lists stylesheets alphabetically.
You can for example select your root document in your content tree, switch to the
Mater page tab and add any stylesheet you want in an order you want by adding their markup directly to the head section:
<link href="~/CMSPages/GetResource.ashx?stylesheetname=FirstStyle" type="text/css" rel="stylesheet" />
<link href="~/CMSPages/GetResource.ashx?stylesheetname=SecondStyle" type="text/css" rel="stylesheet" />
Best regards,
Jan Hermann