Another nice Lysiloma, or Sabicu, or least attractive name - Horseflesh Mahogany.
"by any other name, would a rose smell so sweet" - mangled from W. Shakespear
This one probably just needs more time, its not as tree like, or as attractive as your two previous Sabicu. But it is a good starting point.
But clearly this species of tree has real potential as bonsai.