It's truly subjective that this article in a "finders keepers" first way is required to be about Christian mass.  Satanists have similar masses.  In fact of them are very similar to Christian masses and even on those respected pages could be noted and visa versa (on the Satanic Mass pages).  Those particular groups such as Catholic Mass, Lutheran mass, and Christian mass all have their own pages but the "general" page here should support Religious diversity.  Satanic mass deserves space on this page in whatever space it's necessary to discuss it to a similar level as the others posted and then link to more detailed masses such as Black Mass in similar spaces as others have been.  It's just "where".  Alphabetical?  Does that put Satanism at the bottom?  Do we put "Satanism" then under it "Theistic" and "Atheistic" similar to how Christianity placed it?  If we call out "Atheistic Satanism" as a distinct religion alphabetically it should even be above Christianity but that that could get a lot of "feedback".  The current form is only a "Christian Mass page" and by the definition of Liturgy Satanism should also be here (and the Liturgy page.  This page is going to be included in the WikProject Satanism as the others.