I figured as much, it's not so much they're less aggressive, they prefer to stick with those who have the same confessions, everyone's on the same page. Also nope, not saved by works, saved by Grace through Faith. Whole point of the Augsburg Confession (which is all backed by Holy Scripture) is to justify this. You still have to do good works, that's how you show the world you're a Christian. Another issue, once the OG German/Northern Euro Americans lost their roots, a lot of the US Churches followed so yep, it's not as common. Across the Pond, in Canada, Australia and E.Asia? Different story.
Hmm, that's up to you. If you're interested, here you go.
Augsburg Confession - Wikipedia
The Augsburg Confession · BookOfConcord.org
-Pro tip, stick with the 1530 version, the later one is what started a lot of problems, ones that ended up coming to the USA thanks to the 30 years war.
Here's what the Anglicans had, not really my thing but I've known Anglican clergy who still adhere to this strictly.
Book of Common Prayer - Wikipedia
Here's a personal favorite.
Jordan B Cooper - Home
Enjoy!
BTW, here's the part in the Book of Concord that addresses the issue of faith and works, all backed by Scripture.
IV. Good Works | Book of Concord