Be careful when researching what Baptists believe. There are literally hundreds of different denominations of “Baptist,” and they range from one end of the spectrum to the other.
E.g., in Raleigh, where we lived for ten years, one Baptist church believed in strict separation from the world, and practiced snake handling on a regular basis. (The local media usually did a story about this sect and their snakes once a year or so, and usually the story was quite derisive. I felt kind of sorry for these people, who were only continuing a tradition that has been passed down for centuries. I felt like the media should just leave them alone in peace.)
But another Baptist church in Raleigh was so pro-choice that they hosted NARAL meetings. This same Baptist church rented out their building to the local WICCA group. They were politically and theological liberal–I wondered sometimes why they bothered to call themselves Christians.
And still another Baptist church was “the” evangelical stronghold in the city–very conservative theologically and politically, and quite active in reaching out to the community.
Some Baptists still practice headcovering by females in the church.
Some Baptists still don’t allow make-up, dancing, theater, rock music, etc.
But some Baptists DO allow all these things, and their worship services are filled with theatrical performances and Jesus rock music. And still others do not have any music in their services other than organ music and older hymns.
The Conference Baptist church that I grew up in incorporated a lot of Swedish traditions, since this conference started out as “Swedish Baptist.” When I was a child, they still had a service in Swedish, and throughout my years in that church, Swedish songs were sung by the choir and occasionally the congregation.
So the gist of it is–each Baptist church is different–THAT is the hallmark of being Baptist–having FREEDOM to interpret the Bible the way you choose, and form your OWN fellowship/church. They are very proud of that freedom, and see the many denominations as something good, not bad. (Even though John 17 includes Jesus’ prayer asking that believers be “one,” Baptists would say that Christians are still “one,” even though we all believe and practice differently. They would say that only when we have freedom are we truly “one Body.”)
This means that you have to ask each Baptist church for their “Statement of Faith” and read it carefully to figure out what they teach.
I agree that most Baptists do not refer to Mary as the Mother of God, and most Baptists do not teach asking saints in heaven for intercessary prayer. BUT–never say never! Considering that the “emerging church” movement has influenced many Protestant churches, I would be willing to bet cash that there are Baptist churches in the United States who DO teach various “Catholic” Marian doctrines, and who DO teach their members to ask the saints for prayer.

So don’t assume anything without seeing the written Statement of Faith.