OMG, those are all historical selections.
How about Brad on Happy Endings?
I'm not all that familiar with current TV shows. The Wire, The Sopranos, Boss, Homeland...that's about it for me.
I had to vote for Dr. Smith from Lost in Space. The rest of them ping but could go either way, but not Dr. Smith.
Did Michel from GG date anyone?
I would like to add the character of Maurice Minfield (Northern Exposure) to your list. The tough guy astronaut was the gayest character on that show. From his antique collection to his overt fawning over Chris the DJ. It read as very very gay.
Dan Egan on Veep.
The guy on New Girl.
For current characters I do like r1 and r7's responses. I don't even watch Happy Endings that often and Brad was my first thought.
I was in love with the guy from Barney Miller. I wanted to stab my own father and replace him with that guy.