Default [Help] Lockscreen

Might be a stupid question, but i was wondering what App the lockscreen runs from
Say if i wanted to change the DPI of the lockscreen, what would i need to change in Xposed App Settings..
I want to change my lockscreen Notification Bar To Transparent, But the "Tinted Notification Bar" Xposed Module always makes it black.
I did find an App called Lockscreen, but that doesnt seem to change anything when forcing transparency
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