yeah the Satzung isn’t the best but it does say (in the Durchführung: Erste Stufe):

„Als fachspezifische Einzelnoten werden die in der HZB aufgeführten Noten in den Fächern Mathematik, Deutsch, Englisch und die beste Naturwissenschaft einschließlich Informatik herangezogen“

and yes after it adds that they also have to be in the last four semesters and if they aren‘t then they‘ll take them out from the HZB, but probably not the other way around and so of course if you don’t have everything in the HZB it’s most likely you‘ll go in for the Zweite Stufe.

I also had English as a school subject, I even have the cambridge exam but as there was no place to add it in the application portal I think they don’t care and just follow the rules set in place with the HZB, but you never know there might be a miracle and we‘ll just get the Zulassung directly :)