maybe the cape cobra. When you say commonly found it throughs a loop in the question. It depends on who you ask as to what they think is common. I have friends who have it all. But each friend including myself have our likes and that is what is in our collections plus a little more. Crotulus dissurus is pretty hot, some of your cobras(pretty common), Bothrops aspers pretty hot, but really you pick an elapid that isnt pretty hot.