They have a large variance in rules and their beliefs, but I have never heard of a "faith alone" Amish or Mennonite community. Maybe one exists but I have never heard of one.

They have the same "you have to be in the church and do what the elders say, the Bible is in old German and nobody understands it" basically Latin mass (retarded)

They believe that a physical baptism is required to go to heaven, and that you will only be allowed to be baptized if youre "Amish enough"

And if you use technology then you're no longer going to heaven until you've been forgiven by the church.

No eternal security. It's a works based false religion that blasphemes the holy name of Christ.