Isn't missouri synod, real fire and brimstone like. You're always sinning, etc. I'm asking this seriously as I always thought they were pretty hardcore.
Can depend on the pastor and the church. But LCMS is undoubtedly more conservative than the ELCA. But the WELS is even more conservative than the LCMS. Plus there is even more conservative offshoots of the WELS such as the Church of the Lutheran Confession which broke off from the WELS for tolerating "the errors of the LCMS for too long"
There are also offshoots of the ELCA which broke off after the ELCA decided to start doing homosexual weddings. (North American Lutheran Church) They are more conservative than the ELCA but less conservative than the LCMS.
Lutheranism is kind of a pretty big spectrum.