[krapp]

There are many more demons to choose from than the ones listed in the article[0].

The interesting thing about demonology is that it was mostly being practiced in secret by Christians, even clergy (a lot of these spells and rituals use Christian liturgical elements.) They didn't believe what they were doing was "selling their soul to the devil," rather that Christ had given them dominion over angels and demons, so they had every right to summon demons and use them as they saw fit. Legend at the time was that King Solomon built the First Temple using demon slaves.

Of course the Church proper would have strenuously agreed with this way of thinking.

[0]https://en.wikipedia.org/wiki/List_of_demons_in_the_Ars_Goet...