Just to ease your mind, in all my time as a Baptist I only remember the Word of God ever being preached, not Calvinism or Arminianism as neither is biblical doctrine. When Baptists of different churches come together, every single one will bring a bible, trust me, and will be checking it diligently to see if what the speaker says is true.
As to "different beliefs" you are going to have to come up with something better than that.
I was Baptist also.
If you want to familiarize yourself with the similarities differences in beliefs among different congregations, Google is your friend.
Absolutely !