I don't think most Baptist churches teaches this doctrine anymore. To bring the thread back to its original theme:
Reformed Baptists believe all the things you list. They were originally known as Particular Baptists, because they believe that Christ died not for all men, but for particular people (namely, the predestined elect). They trace their separate history to the 1630s.
General Baptists would, I think, subscribe to all the beliefs you list except the definition of election and the statement that it is impossible for someone who has been justified to be severed from Christ. They believe that Christ died for mankind in general (all men, not only the elect), hence the name "General". They trace their history to 1611.
Your words which I quote above are a matter of definition. If a church no longer teaches the historic Baptist beliefs, is it really Baptist, whatever it puts on its noticeboard? If you mean that a lot of churches with "Baptist" in their name no longer teach historic Baptist doctrine, you are probably right. Some are barely recognisable as Christian at all; others hold to the historic beliefs and practices.
In my personal view, the title "Reformed Baptist" is an oxymoron, as the Reformers believed in infant baptism, a State church, and the imposition of doctrine not only by persuasion of the mind and conscience but by the sword and the civil authorities. However, oxymoronic or not, it is the title chosen fairly recently by a lot of Particular (= Calvinistic) Baptists.
I also share the distaste expressed in one post for putting the Scriptures before even God himself. It seems a distorted structure for any religion to put a book - even an inspired book, even the
inspired book - before the Inspirer thereof.
"If the foundations are destroyed, what can the righteous do?" (Psalm 11). As you will have gathered over the months, I for one take the name Baptist, and I believe I am genuinely such: though I have steadfastly refused to join the debates on various threads concerning the extent of the atonement or the possibility of losing salvation. Such debates (except perhaps with one's closest friends) seem always to lead to strife and dissension, from which may the good Lord deliver us all.