@FollowingHim makes a good point that most small group Bible studies will be similar if the people involved take the Bible seriously. They will seek to understand and submit to God's Word. Therefore, the Bible will be the real authority.
I would also suggest that understanding the basic Good News of the Gospel of Jesus Christ is of chief importance. Jesus Christ Himself actually saves people, He doesn't just help them save themselves.
I would suggest asking people questions about "imputed righteousness" and "double imputation". Do they believe that our sin was "imputed to Christ" on the cross? Did He actually pay the penalty for our sin? Did He actually remove the wrath of God? Did His death remove the guilt of our sin?
Equally important, do they believe that Jesus perfect righteousness is imputed or credited to all who belong to Him by faith? When God looks at the people who hope in Jesus, does He see the sins of those people, or does He see the perfect beauty and goodness of Jesus Christ covering them?
If they wholeheartedly and enthusiastically agree with this imputation, that is a very good sign.
If they don't know what you are talking about, then that might be a bad sign.
If they disagree with imputation, then I would stay away.
There are certain "church search" websites that might be helpful. Here is a link to one that you might use. Please keep in mind that these Churches will almost certainly oppose polygamy (and will probably be weak on patriarchy), but will likely explain the basic Good News of the Gospel of Jesus Christ accurately. That is of chief importance.
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www.9marks.org
If there are Baptist, "Bible Church", or "Calvary Chapel", churches in your area, they will probably be good on imputation. Presbyterian Church in America (PCA) should be also.