Checkliste vs. Prüfliste
Imho, the point is not, which one is used more often. This indicates nothing. "Und" is certainly even more common. This does not qualify "und" as a valid equivalent of any Englisch term.
Finding the broadest semantic overlap (within all regions, if possible) would do.
I did not even look for a source :-)
anglicism / denglish These are phenomens when someone uses uncommon words often in doubtful meaning amid German sentences
I mainly disagree. Which is irrelevant. "Checkliste" is a onomasiologically a compound of an English and a German word, but semntically, it is not a compound, since "check" is not used alone in German.
Translation is all about most unambiguously matching meaning, not about how often a word or synonym is used somewhere in an arbitrary context. Otherwise Google Translate, Bing translate, and others were not so devastating failures at some simple sentences over years.
mh, "und" is very uncommon as a translation for checklist ...
"Checkliste" is a very common translation for checklist and it is the word mainly used in german for lists of points to check. I proved it with many sources. There is no need you search for sources cause i did. But there is no need to ignore all the sources i found either. And the sources are not about just the word "Checkliste", they are about it as a translation of checklist
About theory i don't know much, but i doubt your explanation because it is a compound already in english and is adopted completely (in the sense of "eingedeutscht") in german long before we were born. It is a german word now like "Basketball" with complete declinations (Duden). (see, Basketball is a compound in english, as well, and is adopted as such complete. The idea is funny, thinking Basketball was split once in two words and the english word "basket" was compound then with the german word Ball ... maybe not :-) What you describe seems to me more like "Revenueübersicht" or "Teamaufbau" ;-)