Interesting. How do these churches disagree? This is not a criticism. I am less familiar with them.
Also is there a comparable NBC?
Each church is autonomous completely. The Small Group Bible Studies (AKA Sunday School literature) is written by several subscribing pastors of subscribing churches....
There are other resources available for churches to get if they wish. But it's not a requirement.
There is a National Baptist Association....and they are NOT the same as the SBC and never have been. The SBC has the International Missions Board which is largest mission organization in the world...both in dollars and in missionaries. Domestically they have a huge missions program which includes the cooperative program which provides a cosigner for loans when a church can't get one from the bank on their own. And there's prison ministries, Indian reservation ministries, unwed mother programs and other things like that. Similar to all the things you see the salvation army doing but without any branding of the organization. (Which many people are shocked to learn about as there is NO Brand name organization....but a TON of small, seemingly independent organizations doing all kinds of altruistic work)
Then there's foreign missions...and again the SBC funds missionaries in every nation out there including one's we don't admit to publicly. (Because they would instantly get targeted to be killed or imprisoned)
This is what we agree upon when subscribing to the SBC....but we aren't strictly a missions group...we also collectively put together several small group Bible study literature series, various other study and reference materials and have even funded a comprehensive Bible Translation called the Holman Christian Standard Bible. It is one of the most complete comprehensive study bibles to date with notes, notations, and references.
Where we disagree often is in how our churches operate. (The newspapers get so much wrong) Female clergy are indeed allowed but not in a senior leadership role. As we generally don't send men into Women's Prisons and other roles that women are generally accepted by everyone to function in....such as children's ministries and women's ministries.
Some churches don't allow members who do not give to the church itself a position of leadership within the church itself....some do. It depends upon the church. Some churches are run by a board of Directors or elders and some are run by rotating Deacons....how much of a church is actually run by these groups is highly individualistic and some are just rubber stamps for the pastor. Some give the Pastor his marching orders explicitly. It just depends upon the Church itself. Each church is autonomous to operate as they see fit.
Generally speaking, some church Congregations refuse to bow heads if a woman tries to lead a prayer or sing if a woman tries to lead singing. Some will but most generally don't.
Each church sends 2 delegates to the SBC as it convenes. (The beginning, end, and fullness of the job of president is to bang the gavel to call the meeting to order....literally... that's the entirety of his function....but most use the title to help sell a book)
Everything is voted on. The only way to describe a SBC church is to say they are undefinable. Because the second you can...they are not acting in accordance with SBC guidelines. There exist a plethora of people who over the years tried to get the SBC to adopt a stated Theological system of Charismatics or Calvinism or some other system.....none have been successful because we are a convention and not an association. We agree where we agree and the rest is completely irrelevant and up to individual autonomous churches.