Here's a few :Jo Jo BennettBobby Ellis
, mostly in collaboration with Tommy McCook.
And another one with an unique style (not easy, but when you get into it, it's just great) :Shake Keane
There's a lenghty BBC programme featuring the poet/musician along with LKJ :http://www.youtube.com/watch?v=3oX6S8BNZPY
Apparently, most of the Jamaican trumpeters were mostly into jazz before getting into reggae.