I like to think of them as the trailing edge of the late-adopter curve.

They consider the social and lifestyle impacts of technology. Which can be quite profound.

There are also differences among Amish settlements, with the Swartzentruber Amish, of Michigan, the most conservative: http://amishamerica.com/who-are-the-swartzentruber-amish/

(The site generally has a great deal of information on the Amish.)