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I can't speak to the others yet, but I did find this about the first one:

[The Gloss of Extravagantes of Pope John XXII, Cum. Inter, title 14, chapter 4, "Ad Callem Sexti Decretalium", Column 140 (Paris, 1685). In an Antwerp edition of the Extravagantes, the words, Dominum Deum Nostrum Papam ("Our Lord God the Pope") can be found in column 153[

Apparently, it is a copy of a copy of a copy, etc. The original was actually dated in the 1300's, so this copy is 300 years later.

They have found the original from the 1300's in the Vatican Library, and it says "Dominum Nostrum Papam". The word for God, Deum, is not used.

Additionally, the fact that they're arguing against a claim that they believe the Pope is God says they don't believe such a thing.

I've not been able to look at the others yet, but at first glance I'd say it has to do with their statement that the Pope is Christ's Vicar on Earth..