For The Last Time For All
Never mind what some lawyers say or believe:
The latest version of the AP document, which has been around for some time has a "new" entry called CLASS OF ADMISSION. They should have named it in a more precise and clearer way but this is USCIS.
CLASS OF ADMISSION: It is your present status in the US. If you entered with whatever (H, F, L or any other fancy visas) and you changed status in the US, by for example applying for I-485, then put ADJUSTEE.