Use Custom CSS in some selected SharePoint List

Current Process:

I am having a CSS & JS file in Site Assets, which I render it to some List / Library using Content Editor ( referencing the CSS/JS).


What I need is, End User shouldn’t access these files or see the codes inside my CSS & JS. Is there any possibility that I will add the CSS/JS inside a Master Page or somewhere else (globally) and get the List and Library name (to be applied with changes) from a master list !! So that a non-coder admin can only add list/lib name into that master list and the required changes will apply on that list/library automatically