So far, in all the time I have spent dementing myself with Japanese cartoons and comics, Junk Boy is the ONLY title similar to Golden Boy I've come across.
The basic gist of Junk Boy is this: an average, horny guy finds himself in a line of work that allows him to interact with/seduce babes. With his ability to get a boner at any time/lift tables with his boner, no woman can resist his idiotic, surprisingly seductive ways for long - not even an idol he once masturbated over being safe from his clutches.
Just like Golden Boy, it's sure to piss off women with the way females are shown to be easy to spread. But it's the sort of thing most guys can chill and enjoy; getting a fair few chuckles out of the dialogue/maybe blowing a load over the detailed nipples.
Also, using the logic of other MAL members, both anime have 'Boy' in their titles and, because of that, are comparable.