I find lots of "well of course he was" claims about Sterling Holloway, but like a lot of that sort of thing it appears to be strictly a gay fantasy. The Wikipedia article seems to be very circumspect because (it appears) there is next to no information. A bazillion edits, though, mostly because people spent a lot of time straightening out the filmography.
My experience is that the LGBT project and its friends own the daylights out of articles, or at least feel that they ought to. You'll be interested to know that
tribbles are kinky, for instance. In this case sense prevailed, but there are so many "queer" academics out there, speculating away, that it isn't hard to find "reliable" references. There's also WP's, um, queer fascination with sexual deviancy. But we've been there before.