This is a super vague question, you've got to define trap first.
I mean did UGK even use the word Trap until Tip and them made it hot? Isn't that an Atlanta term?
As long as it's 808 driven beats, fairly high tempo and the subject of matter is the trap is usually the definition we go by today right..
Per how we define trap today, it's got to be Jeezy, T.I., Gucci and them. By a very broad definition, Three 6, UGK, Scarface..?
It's too hard with the cutoff points, someone says Jeezy then you have T.I., Then you have three 6 and Master P/TRU, then you have UGK then you have Face and then multiple different underground cats.