How to briefly write the output of posts in turn from different labels?

Question

WordPress

There is a type of records.
There are two labels: A and B.
The task is to display through the cycle first posts with the first label, then with the second one and display the title of the label name from them.
I know how to get everything out.
But maybe there is some kind of universal way to display posts with a title in turn from each label?