Just updating this to make sure the information is accurate:
Dartrix, a Grass/Flying type, is the first evolution of Rowlet.
Decidueye, a Grass/Ghost type, is the final evolution of Rowlet.
Torracat, a Fire type, is the first evolution of Litten.
Incineroar, a Fire/Dark type, is the final evolution of Litten.
Brionne, a Water type, is the first evolution of Popplio.
Primarina, a Water/Fairy type, is the final evolution of Popplio.