I was a Southern Baptist and graduated from a Southern Baptist Seminary in Canada.
i know literally hundreds of Southern Baptists who love and serve Jesus with all their hearts souls, minds and strengths. Many of them are former missionaries, or are still on the mission field, witnessing and seeing God bring many souls to him!
The only reason I left the denomination was because of a pastor who went a little crazy and stopped preaching the Bible. I am still a Baptist, but in an NABC, and a very Bible believing church!
As for baptism in any convention or independent church, adult or believer's Baptism is the only kind that is practised, although I have seen some children around 12 baptized, who are still following God with all their heats.
The most divisive heresy that has rocked the church for over 30 years, is the Prosperity or Health and Wealth gospel, which has literally destroyed thousands of lives, through being taken captive by false doctrine, including the lie that God wants everyone healthy and rich, and all you have to do is claim it. The most horrific doctrine I can think of in the history of the Christian Church.
OP, still waiting on your Bible verses showing that Calvinists are not saved...... Oh right, there are none, which is why you did not post any!