...Your list has at least 3 non-lead characters on it. I considered making a list of "coolest male characters", but in the end I decided to limit mine to actual lead characters. I might do the other one later.
1. Alucard (Hellsing)
2. Nura Rikuo (Nurarihyon no Mago)
3. Yagami Kazuma (Kaze no Stigma)
4. Negi Springfield (Mahou Sensei Negima)
5. Katsuragi Musashi (Kami to Sengoku Seitokai)
6. Usui Takumi (Kaichou wa Maid-sama)
7. Himura Kenshin (Rurouni Kenshin)
8. Vash the Stampede (Trigun)
9. Abel Nightroad (Trinity Blood)
10. Edward Elric (Fullmetal Alchemist)
Others I want to mention even if they didn't quite make it to the list:
Mizushima Tooru (Iris Zero)
Kamijou Touma (To Aru Majutsu no Index)
Yakumo Saitou (Shinrei Tantei Yakumo)
Aono Tsukune (Rosario+Vampire)
Thorfinn (Vinland Saga)
Hanabishi Recca (Flame of Recca)
Morino Ryoushi (Ookami-san to 7-nin no Nakama-tachi)
Echizen Ryoma (Prince of Tennis)
Alzeid (Hatenkou Yuugi)
Kuzumi Taiga (Mx0)
...
Okay, I'd better stop now. I could mention at least another fifteen names, but this is enough.
Edit: Okay, here's a hastily compiled list of coolest male characters, including secondary characters. It's nearly impossible to narrow this one down to just 10, and I'm having trouble putting them into order, so I tried not to think too much when I made this.
1. Alucard (Hellsing)
2. Nura Rikuo (Nurarihyon no Mago)
3. Yagami Kazuma (Kaze no Stigma)
4. Kurei (Flame of Recca)
5. Sesshoumaru (Inuyasha)
6. Walter C. Dornez (Hellsing)
7. Negi Springfield (Mahou Sensei Negima)
8. Urahara Kisuke (Bleach)
9. Zelman Clock (Black Blood Brothers)
10. Katsuragi Musashi (Kami to Sengoku Seitokai)