This is pure gossip- no cites or “I have a friend whose hairdresser’s twin brother used to date ___” testimonies needed.
Bearing in mind that they could well in fact be straighter than the road to hell, who are the “most openly closeted” celebrities remaining? Openly closeted means “lots and lots of gay rumors” coupled with either a refusal to talk about their private life or “never seem gayer than when they deny they’re gay”.
And disclaimer again: every person named could well be straighter than the road to hell.
Tom Cruise (who personally I don’t believe is gay so much as severely strange)