A few basic notes: Men are generally less curvy than woman and cannot quite do the same sexy shapes women can, as demonstrated by the hawkeye initiative. And of course, don't be afraid to mix and match. Character design needs creativity. EG: Jojo'#s Bizzare adventure manages to pull of the bodies of The Jackman with the clothing and faces of The Lelouch, to stunning effect.
Now, depending on the character, you could have:
The Jackman: The chest hair, huge shoulders, abs, you know the drill. This sort of character will often spend their time 100% shirtless in their sexualising scenes. And remember: not just chiselled abs and face, chiselled butt. Remember in Days of Future Past, Jackmans butt? Take reference. Deep, deep reference. Note that when a male character shows their butt like that, they don't need to be wearing some sort of thin underwear. That's because natural female form leaves certain unshowables on display. For male sexualisation, that is not a problem, because for The Jackman, you need that clenched butt. Clench it and show it off. But enough about butts. If this is a combat man, some sort of scars are always good. And veins. You want veins. It's phallic imagry. When going for full on anger mode, your character should look like a gloriuous erect penis. And I am not joking. It portrays all consuming anger excellently as well as handing out boners to the audience like sparklers on bonfire night. And in general, standing up straight. They need to look like a rock. Immovable, and a force of nature. This sort of look is more commonly attributed to older characters, and goes well with facial hair. Clothes will usually be damaged, sometimes even midlife-crisis-y. Jeans, leather, maybe even smoking.
The Lelouch: Your good old fashioned pretty boy. This time, thin. If the chest is ever shown, no chest hair. Maybe not even particularly sporty in general, though it is perfectly viable top have it so(see: Free: Iwatabi Swim Club).Probably minimal facial hair too, though a British moustache can compliment this well for slightly older characters(but not too old, important is a very smooth face for this style). Smart suits and the like do well here, and often something that shows off a bit of the shoulders. Take Straid of Olaphis's coat in Dark Souls 2, where the collar is omitted in favour of showing a bit of the chest and shoulders. Wide shoulders are a staple of male sexualisation, don't be afraid to show them off. Will often stand with their legs together, and have relatively styled hair. This look is usually done with richer and more sopcilly powerful characters, as it exudes power, but as said above, don't be afraid to try it with other characters.
The Dante: The not-new one. A good base way of thinking about this is a less rich Lelouch. And an advantage of this is that it ages well, see how Devil May Cry 3's young, casual Dante becomes the (personally, much sexier) Devil May Cry 4 Dante, experienced and still alive and kicking. Again, no chest hair. This character can show off their chest a lot too, so keep it clean. Six-pack or not is personal choice, here it really doesn't matter. This character will move in a relaxed manner, swaying themselves around, casually fiddling with things during conversation (having a predesigned object for this is good, see Dante's Rebellion and how he casually swings it around during stand offs), and leaning against things. Probably pays little attention to important conversations in order to give this effect, but do as you wish I you can do it well.
The Bond, James Bond: Somewhere between Lelouch and Jackman. Chest Hair is an optional for this, but you'll want the six pack and shoulders of a Jackman. This character is cooler, more collected, so no anger veins. But seductions is a key to this character, so suave clothes and smooth voice. As far as facial hair goes, stubble is your limit. No more than that. Sometimes this character will be smileless or have a signature smile. The key to this character is situations. They will often end up slowly leaving the water was they fling their hair free of water droplets, or doing up their collar buttons as they leave a car, implying the naughties that happened within that Ford. Speedos are what I'll tell you here. You don't get the veins, so have a bulge.
That's what comes to mind right now, but of course references, questions and notes of exceptions are always helpful. A good recent example would be Mikisuki Aikuro from Kill la Kill, he's somewhere between Bond and Dante and he's one of the few MALE characters how uses his sexuality in a similar way to how women are often portrayed to do.
Now go give people boners.
