Richard McBrien of Notre Dame suggested
more than one cardinal. There is defintely one cardinal known to be an active homosexual. That was acknowledged by McBrien, Bill O'Reilly, and by implication the president of a large Catholic organization. (It was said on the program that this man definitely knew the name of the cardinal. McBrien knew this was so of the organization's president. It sounded like common knowledge among many people.)
But don't ask me who it was. When I was at Notre Dame there were no less than three active homosexuals in theology (and in some kind of hot water). I suspected more but I'm not going to say who. My wife thought it was odd that the retired president of Notre Dame lived on a floor of the ND library with another priest. The floor was designed for their apartment. That does not mean that they were homosexuals. However, it seemed peculiar.
I wouldn't make too much of the living arrangements of priests. My experience is that the company of other priests is very important to priests, providing them with much needed companionship of those who are similarly situated, socially and otherwise. Also, IMO, living alone provides a situation conducive to warping the psyches of those not cut out to be hermits.