*shrug* Of those, the only one I've watch recently was HxH.
To my knowledge HxH didn't have any officially gay characters. I've seen you talk about Uvogin/Shalnark, but the evidence for that is.... incredibly fishy. I'd possibly accept Killua or Leorio or even Nobunaga (being the one to get far more emotional than Shalnark) over the aforementioned, but there's effectively very, very little romance in the series at all. Uvogin seems like really reaching and Shalnark is reaching even further. And Togashi did attempt to get a shounen-ai sports series (Trouble Quartet) published but couldn't find any takers. So, I dunno, the Togashi hang up seems sketchy.