The collected works of St Robert Bellarmine is 19 volumes - at least the Roma edition which I have researched here in my hometown (this work is contained at the Baptist Theological Seminary *Thanks a lot to the Novus Ordo heretics who surrendered these volumes to their brother heretics!) The point is, to quote Bellarmine's opinion on unbaptized catechumens, and to create an entire false theology around this opinion, is patently ridiculous. Bellarmine was fighting more heretics than even Augustine, and to conclude that Bellarmine could not be wrong in some of his theological opinions is equally as ridiculous. There is no Church pronouncement which we have seen that confirms unbaptized catechumens as being in paradise; in fact it is mere speculation that such a person exists, aside from the case of the person smacked by the car on his way to the baptismal fount. In fact we have Trent's proclamation that the "sacraments are necessary for salvation." And most would agree that BOD is a non-sacrament.
The catechumen, unbaptized, might very well recite the Athanasian Creed, and firmly assent to all the truths contained therein with his intellect. But he still does not "have" the Faith. He believes the Faith, but he does not have it, because he is not yet sacramentally baptized. Noah believed all that God had revealed to him, in fact, he built the vessel and had the intention of entering it; but he was not safe until he was "inside the ark." And all those outside the ark, who may or may not have had the intention of entering it, were probably damned.