I can't answer this question. There are so many. If you're talking about wanker material, Justin Trudeau, Wayne Gretzky, Bieber, Bradley Cooper, Ted Cruz, and several others fill a fantasy.
In lieu of answering with the obvious...Celine Dion (because who doesn't love a Diva) instead I'm going to choose a fictional person and though he isn't a household name even so he still holds a very special place in Comic Book history and for the changing of LGBTQ stereotypes. He is a definite mile-marker in the early fight of bringing visibility to those who previously had been closed and locked inside the literary closet.
His name is Northstar. His secret identity is Jean-Paul Beaubier. A Marvel comics creation. He is a mutant/meta-human affiliated with the groups Alpha Flight and X'men. He debuted in 1979. The character is one of the first openly gay superheroes in American comic books, and the first openly gay character to come out in a book published by Marvel Comics. He married his husband, Kyle Jinadu, in Astonishing X-men #51 (June 2012), which was the first depiction of a same-sex wedding in mainstream comics.
A positive symbol for youth, he was and is a hero and a Canadian who used his powers not only for good but also for breaking down doors and shattering ceilings both within the world of entertainment and throughout the gay community.