None of the states listed requires an employer to provide an experience letter. Texas law gives an employer permission to write a letter detailing the true reasons of an employee's dismissal, but does not make the letter mandatory and says nothing about your experience. The other states do not even appear on the list of states which may, in some situations, require documentation of some sort.

This is not to say that your former employers won't provide you with letters, only that there is no law you can invoke to force them to if they choose not to. This is going to be entirely between you and the employers, and what you and they can agree on.