Run those names through IMBD to narrow it down. Reddit will probably figure it out tonight.
I noticed that Guber produced both Midnight Express and Youngblood, both of which have some homo-erotic scenes, but that’s a long shot. The bigger question might be to see if Guber worked a lot with those who are rumored to be involved like Bryan Singer.
Singer’s most frequent ‘collaborations’ are Ian McKellan and Hugh Jackman and James Marsden, 4 times each. Spacey twice. Spacey won his first Oscar in a Singer film.